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Author SHA1 Message Date
Colby MchenryandGitHub d618d94144 fix(extraction): detect a plain struct Derived : Base base clause in .h headers as C++ (#1592) (#1593)
Fixes #1592.

## What was wrong

A `.h` header whose only C++ construct is a plain derived type —

```cpp
struct Base {};
struct Derived : Base {};
```

— was classified as C. The `.h` language check (`looksLikeCpp`) recognizes `class`, `namespace`, `template`, access sections, `virtual`, `using`, and — since #1159/#1207 — the export-macro form `struct ENGINE_API Derived : Base`. The plain form has none of those signals. Routed through the C extractor, `Derived` vanished from the index and the base clause was read as a K&R-style declaration, minting a phantom `function Base` with `returnType=Derived` (the exact output in the issue).

A second, independent miss the reporter called out: the check only read the first 8192 characters, so a large header with a long C-compatible preamble (include guards, `#define`s, plain typedefs) hid the signal even when it was there.

## What this does

`looksLikeCpp()` now runs two passes:

1. The existing 8 KB sample regex, unchanged.
2. A scan of the **whole file** (comments stripped) for a class/struct **base clause**: `class`/`struct` + tag + optional `final` + `:` + optional `public`/`protected`/`private`/`virtual` + a base name (scoped, optionally templated) followed by the body's `{` or a `,` introducing the next base.

That shape has no valid C reading, so widening it to the whole file can't drag a C header over to C++:

- a bit-field's `:` follows a member *name* inside the body (`unsigned a : 3;`), not the tag;
- a ternary's `:` is separated from the tag by `)` / `*` / a declarator (`sizeof(struct foo) : 0`);
- a label or identifier like `struct_end:` has no whitespace after `struct`;
- comments are removed before the scan, so doc-comment prose (`/* struct timeval: seconds, microseconds */`) can't match; and the `{`/`,` terminator keeps a string literal's prose from matching too.

Detection only — the C++ extractor already handles the header correctly once it's routed there (renaming to `.hpp`, as the issue notes, already worked).

## Tests

`__tests__/extraction.test.ts`:

- plain / `: public Base` / `: ns::Base` / `: Base<int, Foo<T>>` / `final : Base` / multi-base with `{` on the next line / `: virtual Base` → `cpp`;
- a base clause placed **after** 8192 characters of C-compatible preamble → `cpp`;
- controls that must stay `c`: a bit-field struct, `sizeof(struct foo) : 0` + a cast ternary, a `struct_end:` label and `struct_a` identifiers, doc-comment prose shaped like a base clause, and the two pre-existing C controls;
- end-to-end `extractFromSource('src/min.h', …)` on the issue's header: a `struct` node `Derived` (language `cpp`), exactly one `Base` node and it is a `struct` — no phantom function.

Issue repro re-run against this build: `codegraph init` → `query Derived` returns the `cpp` struct; `query Base` returns only the struct; the files table records `src/min.h` as `cpp`.

Full suite: `npm test` → 174 files passed, 3010 tests passed, 179 skipped.

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2026-08-26 10:38:48 -05:00
Colby MchenryandGitHub cf1b0e341a fix(sync): refresh the watcher's scope when codegraph.json or a .gitignore changes (#1590) (#1594)
Fixes #1590.

## What was wrong

The live file watcher built its scope matcher — built-in defaults + `.gitignore` + the `codegraph.json` `exclude`/`include` rules — once in `start()` and kept it for the watcher's lifetime. The MCP server is long-lived, so a `codegraph.json` created or edited after it started was invisible to the watcher, while `codegraph sync` (a fresh process with a fresh matcher) honoured it immediately. From the user's side: the CLI removed a newly excluded file, and the daemon re-indexed it a few seconds later, which reads as "`exclude` doesn't work". As the report points out, `extensions` on the very same config file *was* read live (its loader is mtime-cached), so two fields of one file behaved differently.

There was a second half to it. The watcher's scoped fast path hands the exact edited paths to sync, and that path stat'ed and re-parsed them without consulting the scope matcher at all — so the stale view of scope leaked straight into the index.

## What this does

**Watcher — rebuild on a scope change, then reconcile in full.** An event for the root `codegraph.json` or `.gitignore` rebuilds the matcher, marks the next sync as a full reconcile, and schedules it. A scope change has no per-file events: newly excluded files must be *removed* from the index and newly included ones *added*, and only the scan-diff (which builds its own fresh matcher) knows which those are. Two ordering details are deliberate:

- the two root files are checked *before* the matcher is consulted, so a user pattern that happens to cover them (`*.json`, `.*`) can't hide their own edits;
- a nested `.gitignore` (an embedded child repo's own rules, or a subdirectory rule the git-backed scan honours) is checked *after* the matcher, so the thousands of package-local `.gitignore`s an `npm install` writes under an ignored `node_modules/` can never trigger a rebuild storm.

Rebuilding runs embedded-repo discovery (one `git ls-files`), which is fine per config edit and never happens per event. Replacing the field serves both watch strategies: the recursive handler and the per-directory `shouldIgnoreDir` walk read it on every call.

**Scoped sync — re-check the paths it was handed.** The orchestrator now runs scoped paths through the same scope matcher and source-extension gate the full walk applies. An out-of-scope path is treated as absent: removed if tracked, never parsed on trust. The matcher is memoized on the mtimes of the two root files it derives from (two `stat`s per sync while nothing changed), so the scoped path keeps skipping O(repo) work — paying embedded-repo discovery per sync would defeat its whole point.

## Tests

- `watcher.test.ts` — a `codegraph.json` edit schedules a full sync, after which an edit inside the newly excluded tree is dropped by the live matcher (not pending, no sync) while an in-scope edit still syncs scoped; a root `.gitignore` edit behaves the same; a nested `.gitignore` forces a full sync; a `.gitignore` under `node_modules/` schedules nothing; dropping the exclude again readmits the tree.
- `sync.test.ts` — end-to-end through `CodeGraph`: a scoped sync of a path that `codegraph.json` now excludes removes it (`filesRemoved: 1`, nothing parsed — the symbol added to the file never appears), stays out on a repeat, and is re-added through the same scoped path once the exclude is dropped.
- All five new tests fail on `main`; the `node_modules` guard passes both ways as expected.
- Full suite: 189 files, 3184 passed / 9 skipped.
- CLI half of the issue's repro (init with `exclude`, edit the config + the file, `codegraph sync`): the newly excluded file is removed and its new symbol never enters the index.

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2026-08-26 10:38:38 -05:00
Colby MchenryandGitHub 838006c947 fix(kernel): guard the native walkers against stack overflow and defer deep files to wasm (#1581) (#1600)
Fixes #1581.

## What was wrong

`codegraph init` / `codegraph index` died with `Segmentation fault` — the whole CLI
process, not a parse worker — on a C/C++ file with very deep brace nesting (llvm's
`clang/test/Parser/parser_overflow.c`, 16,384 nested `{`). The reporter's diagnosis is
exactly right: tree-sitter's parser is iterative, so the file parses fine, and then the
native kernel's **recursive walker** (`visit_node` → `visit_for_calls_and_structure` → …,
one frame per AST level) overflowed the thread's stack. A native overflow can't be caught
the way a wasm abort can, and a parse worker is a thread of the `codegraph` process, so
the SIGSEGV took the entire indexer down — no message, no per-file fallback, no partial
index.

Two things made "just give the worker a bigger stack" the wrong fix:

- it only moves the cliff — reproduced here: the reporter's 16,384-deep file kills a
  default 4 MiB worker (rc=132 on macOS / 139 on Linux), and a 100k-deep file kills the
  8 MiB **main** thread too;
- the walkers are shared by every kernel-routed language (20 of them), and each has
  several recursion points with different frame sizes, so no single stack size is a
  provable bound.

Meanwhile the wasm path already handles this shape gracefully: its JS walker catches its
own `RangeError` per file and stores a partial result with a `parse_error`. The kernel
just needed a way to get there instead of dying.

## What this does

**The kernel guards its own recursion against the calling thread's real stack bounds and
defers a too-deep file to wasm** — the same `defer:` routing signal it already uses for
files with parse errors, which `src/extraction/kernel/index.ts` treats as "take the wasm
path for this file", silently.

- `codegraph-kernel/src/stack.rs`: per-thread stack bounds from the OS, computed once per
  thread and cached — glibc/musl `pthread_getattr_np` + `pthread_attr_getstack`, macOS
  `pthread_get_stackaddr_np` + `pthread_get_stacksize_np`, Win32
  `GetCurrentThreadStackLimits` (a hand-declared `kernel32` extern; no `windows-sys`).
  `exhausted()` is one thread-local load and one compare: true once the stack pointer is
  within a 256 KiB red zone of the limit, and it latches a flag. Where the OS can't report
  bounds it falls back to a fixed 1 MiB descent budget measured from the entry stack
  pointer — safe on anything from Node's 4 MiB worker default up. So the guard is exact on
  the 4 MiB worker, the 8 MiB main thread, and any `resourceLimits.stackSizeMb` alike.
- `stack_guard!()` (defined in `lib.rs`) is the first statement of every recursive walker
  function — all **150** self-recursive or on-cycle functions across the 15 walker modules,
  found by script (every cycle in the call graph, not just direct self-calls). It returns
  `Default::default()` (`()`, `false`, `None`, `""`) so an exhausted walk simply stops
  descending; a hook returning `false` sends its caller down the generic child walk, whose
  own guard returns at once.
- `extract_file` runs the whole walk under `stack::run_guarded`: if the flag is set
  afterwards the (truncated) result is discarded and replaced by
  `defer: nesting too deep for the native walker — wasm recovery handles it`.
- `parse-pool.ts`: a comment at `new Worker(scriptPath)` records why there is deliberately
  no `resourceLimits.stackSizeMb` bump.
- No new crates beyond `libc` as a direct unix dependency (already in `Cargo.lock`
  transitively). No wire/ABI change.

Net effect for the reporter's repo: `deep.c` goes to the wasm path, lands as
`function foo` plus a recorded parse warning, and the other 31,607 files index normally.
`CODEGRAPH_KERNEL=0` and the `exclude` workaround are no longer needed.

## Tests

**Rust unit tests** (`cargo test`, 21 passed — 7 new in `stack.rs`): the walkers for
C, C++, Rust, TypeScript and Python are driven on a **1 MiB** thread (a quarter of Node's
worker default) with 30k-deep nesting and must return `defer:` instead of crashing;
shallow files are untouched; the latch resets between runs; the OS bounds are sane on the
main thread and describe a small thread's own stack.

**`__tests__/kernel-deep-nesting.test.ts`** (new, 8 tests — skips without a staged `.node`,
fails under `CODEGRAPH_KERNEL_EXPECT=1` if the kernel is missing, like the other kernel
suites):
- every default-routed language (all 20) survives a 60k-deep expression on the main thread
  — clean result or the wasm fallback's partial result, never a crash;
- the reporter's exact 16,384-brace C file is indexed (partial) on the main thread;
- 200-deep expressions in every language still take the kernel path clean (the guard never
  trips on normal code);
- inside a **default-sized 4 MiB `worker_threads` Worker** through `dist/`: the reporter's
  `deep.c` and a 60k-deep expression in every language come back `deferred` with exit 0,
  and a normal file still extracts natively;
- end-to-end through the built CLI: `codegraph init` on a repo holding `deep.c` + `ok.c`
  exits 0 and records both files, with both functions.

**Existing kernel suites**: all 15 (`kernel-*-parity`, `kernel-scaffold`,
`kernel-retry-materialize`, `kernel-grammar-parity`) pass unchanged, 147 tests — the guard
never fires on the parity fixtures.

**Reporter's probes** (`one.js` from the issue, default 4 MiB worker, this build):
`deep.c` → `deferred`, exitCode=0 (was rc=132/139); `deep100k.c` → `deferred`, exitCode=0.
Main thread: `deep.c` / `deep100k.c` → wasm partial with
`Parse error: Maximum call stack size exceeded`; a 6,000-term binary expression and a
3,000-branch `else if` chain stay on the kernel path with clean results.

**Perf** (same `dist/`, only the `.node` swapped via `CODEGRAPH_KERNEL_PATH`; interleaved
main/new ×3, `codegraph init`, macOS arm64):

| repo | main (median) | guarded (median) | nodes / edges |
|---|---|---|---|
| express (141 files) | 0.60 s (0.58–0.65) | 0.61 s (0.58–0.61) | 1,084 / identical |
| redis (786 C/H files) | 4.44 s (4.39–4.66) | 4.49 s (4.41–4.70) | 19,942 / 76,446 identical |

Within run-to-run noise, as expected for one TLS load + compare per recursion entry.

**Linux (Docker, `node:22-bookworm`, kernel built in-container, `docker run --rm --init`)** —
the reporter's platform and the glibc `pthread_getattr_np` bounds path:

```
=== platform ===
Linux efe3cc86947b 6.12.54-linuxkit #1 SMP Tue Nov  4 21:21:47 UTC 2025 aarch64 GNU/Linux
v22.22.3
-rwxr-xr-x 1 root root 35332288 Aug 22 18:02 codegraph-kernel/prebuilds/linux-arm64/codegraph-kernel.node

=== reporter repro (issue #1581): 16,384-brace deep.c, codegraph init ===
│
└  Done

init exit code: 0
  file: deep.c
  file: deep100k.c
  file: ok.c
  function: add
  function: bar
  function: foo

=== worker probe: kernel raw extract in a default 4 MiB worker ===
deep.c: deferred
deep.c: worker exitCode=0
deep100k.c: deferred
deep100k.c: worker exitCode=0
ok.c: kernel nodes=2
ok.c: worker exitCode=0

=== cargo test stack:: (glibc pthread_getattr_np bounds path) ===
test stack::tests::os_bounds_are_sane_on_this_platform ... ok
test stack::tests::small_stack_reports_its_own_bounds ... ok
test stack::tests::normal_files_are_untouched_by_the_guard ... ok
test stack::tests::deep_braces_c_defer_instead_of_crashing ... ok
test stack::tests::latch_resets_between_runs ... ok
test stack::tests::deep_parens_cpp_rust_ts_python_defer_instead_of_crashing ... ok
test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 15 filtered out; finished in 0.23s

=== vitest: kernel-deep-nesting + kernel-scaffold ===
✓ __tests__/kernel-scaffold.test.ts (10 tests) 30ms
✓ __tests__/kernel-deep-nesting.test.ts (8 tests) 36989ms
Test Files  2 passed (2)
Tests  18 passed (18)
```

(The pre-fix crash was reproduced on macOS — rc=132 in a default worker, rc=139 on the main thread at 100k depth — not re-run inside this container; the reporter's Linux x86_64 trace is the SIGSEGV form of the same overflow.)

**Windows (Parallels ARM64 VM, MSVC 14.44, `cargo 1.97`, kernel built on the VM,
`GetCurrentThreadStackLimits` path)**:

```
head: cbf8485 fix(kernel): guard the native walkers against stack overflow and defer deep files to wasm (#1581)
=== cargo build --release (win32-arm64) ===
    Finished `release` profile [optimized] target(s) in 2m 04s
staged: 35086848 bytes
=== cargo test (stack guard unit tests) ===
test stack::tests::normal_files_are_untouched_by_the_guard ... ok
test stack::tests::os_bounds_are_sane_on_this_platform ... ok
test stack::tests::small_stack_reports_its_own_bounds ... ok
test stack::tests::deep_braces_c_defer_instead_of_crashing ... ok
test stack::tests::latch_resets_between_runs ... ok
test stack::tests::deep_parens_cpp_rust_ts_python_defer_instead_of_crashing ... ok
test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 15 filtered out; finished in 0.49s
=== reporter repro: codegraph init on a 16,384-brace deep.c ===
└  Done
init exit code: 0
=== vitest: deep-nesting + scaffold (CODEGRAPH_KERNEL_EXPECT=1) ===
✓ __tests__/kernel-scaffold.test.ts (10 tests) 55ms
✓ __tests__/kernel-deep-nesting.test.ts (8 tests) 67239ms
   ✓ every default-routed language survives a 60k-deep expression on the main thread 52801ms
   ✓ inside a default-sized (4 MiB) parse worker, through dist/ > defers a 60k-deep expression in every default-routed language 13050ms
   ✓ end-to-end: codegraph init on a repo holding the deep file > exits 0 and records deep.c alongside the normal files 936ms
Test Files  2 passed (2)
Tests  18 passed (18)
```

(The end-to-end test is what reads the Windows index back through `node:sqlite` — `files` = `deep.c`, `ok.c`; functions `add`, `foo`.)

Full `npm test` on this branch (macOS arm64, kernel staged): **190 files passed, 3,185 tests passed, 10 skipped, 0 failed.**

Clippy note: `cargo clippy` on the current toolchain (1.92) reports 18 pre-existing lints
(`manual_contains`, `unnecessary_to_owned`, …) in walker code this PR only touched by
inserting guard lines; none are in `stack.rs`/`lib.rs`. Left alone to keep the diff
reviewable.

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2026-08-26 10:38:29 -05:00
Colby MchenryandGitHub 0d17dfd6a8 feat(cli): install --init and init --yes for a one-shot, non-interactive bootstrap (#1578) (#1595)
Fixes #1578.

## What was wrong

Bootstrapping CodeGraph in a fresh environment — the issue's case is a throwaway container per AI session — took two commands, `codegraph install --yes` and then `codegraph init`, and the second one could still stop on a prompt (the gitignored-child-repos offer, the watch-fallback offer on WSL/`/mnt`). There was no way to wire agents and build the project's index in one non-interactive line.

The installer's "never index implicitly" rule is deliberate (a surprise index of `$HOME` is exactly what `init` refuses), so the gap is an explicit opt-in, not a change in default behavior.

## What this does

- **`codegraph install -i, --init`** — after wiring the agents, runs the `init` flow in the current directory. It also runs when nothing was wired (`--target none`, no agents detected), since the installer returns normally in that case. Every `init` guard applies: a home directory / filesystem root / parent of home is **refused with exit code 1** (no implied `--force`), and an already-initialized project just reports that and exits 0. `--print-config` and `--refresh` return before the install, so `--init` is a no-op with them.
- **`codegraph init -y, --yes`** — non-interactive: the ignored-repos offer prints its one-line `includeIgnored` opt-in snippet instead of prompting (the existing non-TTY behavior), and the watch-fallback offer takes its `yes` default. `install --init` passes `--yes` through, so `codegraph install --yes --init` is a fully unattended bootstrap.
- The `init` action body becomes `runInit()`, shared by both commands. The plain `init` path is behavior-identical (same refusal, already-initialized notice, supervised index, telemetry, offers, outro).
- The post-install "Next: index a project" note gains one line mentioning `--init`; README gets the flag row and a `--yes --init` example.

On the reporter's other observation — `install --yes` skipping the "install the CLI on your PATH" step: that's by design for scripted use (it assumes the CLI is already present), and the `bunx @colbymchenry/codegraph serve --mcp` MCP entry they found is the self-contained alternative. Not changed here.

## Tests

`__tests__/cli-install-init.test.ts` — end-to-end against the built binary with stdin closed (a blocking prompt would fail), always `--target none` so the suite never touches an agent config on the host:

- `install --yes --target none --init` → exit 0, installer reports nothing to wire, `Initialized in <tmp>`, `.codegraph/codegraph.db` exists;
- the same on an already-initialized project → `Already initialized`, exit 0;
- the same at the filesystem root → exit 1, `Refusing to initialize`, nothing written;
- `init --yes` with stdin closed → exit 0, index built;
- `init --help` lists `-y, --yes`, `install --help` lists `-i, --init`.

`npx vitest run __tests__/installer-targets.test.ts __tests__/upgrade.test.ts` → 283 passed, 3 skipped. Full `npm test` → see the checks on this PR / below.

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2026-08-26 10:38:21 -05:00
Colby MchenryandGitHub 278a8edc35 fix(resolution): resolve calls to object-literal namespace members (#1573) (#1597)
Fixes #1573. Thanks @IAliceBobI — the report had the root cause exactly right, and the fix sits one layer up from the suggested spot (resolution rather than the container-kind set), for the reason below.

## What was wrong

Methods of an exported object-literal constant — `export const api = { call() {…}, get: () => {…} }` used as a module's API surface — never received a call edge from `api.call()`, same-file or through an import. The members are extracted as plain functions with **bare** qualified names (`call`, not `api::call`) sitting inside the constant's source extent, so:

- the `Container::member` lookup the class-shaped kinds use (#825) bails on kind `constant`, and even with `constant` added to that set there is no `api::call` to find;
- the declared-type inference for imported singleton instances (#1292) finds no type in a literal and falls back to the constant edge;
- the same-file strategies only consider classes and `method` kinds, so the call resolved to nothing at all.

Net effect: `callers` / impact reported zero for methods called from everywhere, with no boundary warning because nothing about `obj.method()` looks dynamic.

## What this does

Adds one helper that resolves a member **by containment** — a node named `member` whose source range lies inside the value's range, in the value's own file — and uses it from both halves:

- **Import path**: when the imported value is a constant/variable, the literal member is tried right after the `Container::member` lookup and before the #1292 instance inference, so the cross-file edge lands on the method instead of the constant.
- **Same-file path**: a same-file constant/variable receiver (TS/JS family only) is checked before the class-name strategies.

Precision rules, all tested: calls accept callable kinds only; a declaration nested inside another member's body is not a member; nothing outside the value's range can donate a match — a same-named top-level function, or a method returned by a factory the value merely holds — so those cases keep today's behavior rather than guessing. Class statics (`C.s()`) and non-literal values are untouched.

Extraction and qualified names are deliberately left alone: changing how literal members are named would have to be mirrored in the native kernel byte-for-byte, and the resolver-side lookup is contained and language-gated.

## Tests

- The issue's repro end-to-end: `sameFileCallers` and `crossFileCaller` are both callers of `m`; a decoy `m` in a third file gets none; the `C.s()` static control resolves exactly as before; `crossFileCaller` no longer has a `calls` edge to the constant.
- Arrow-property and method members both resolve; a `function call()` nested inside `get`'s body is never taken for `api.call()`.
- A value holding a factory's result (`const obj = makeObj()`) with a same-named top-level `m` in the file: no false attribution, existing behavior kept.
- The two positive tests fail on `main`; the control passes both ways, as a guard should.
- Full suite: 189 files, 3181 passed / 9 skipped.

With the built CLI on the issue's `a.ts`/`b.ts`: `codegraph callers m` → 2 callers (`sameFileCallers`, `crossFileCaller`); `callers s` unchanged; edges `sameFileCallers -> m` (0.85) and `crossFileCaller -> m` (import, 0.9), none to `obj`.

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2026-08-26 10:38:13 -05:00
Colby MchenryandGitHub 7963672689 fix(rust): resolve self.field.method() on the field's declared type instead of a same-named method (#1585) (#1599)
Fixes #1585. **Stacked on #1596** (the base branch is `fix/1588-rust-impl-type-qualification`; this PR's own diff is the second commit). Merge #1596 first, then retarget/merge this one.

## What was wrong

```rust
impl Outer {
    pub fn run(&mut self) {
        self.inner.run();      // inner: Inner
    }
}
```

produced `Outer::run -> Outer::run` — recursion the source doesn't contain. The extractor collapsed every `self.<field>.<method>()` receiver to the bare method name (`run`), so the resolver only ever saw `run` and exact-matched the nearest same-named method — the calling method itself, or a method of an unrelated type. Nothing marked the edge as a guess, and no row stayed in `unresolved_refs`, so a consumer had no way to tell.

The same happened when the field's type isn't a project type at all (`its: std::vec::IntoIter<_>` → `self.its.next()`, `matcher: Regex` → `self.matcher.is_match()`): the bare `next` / `is_match` attached to whatever local method shared the name. ripgrep had 279 self-edges on `main`; the issue lists three sites, all of this shape.

(The issue's C++ control — "`Outer::run -> Inner::run` resolves correctly" — doesn't actually hold on `main`: `inner.h` is classified as C by the `.h` heuristic, so `Inner::run` never exists and the C++ repro self-edges too. That's #1592, fixed separately.)

## What this does

Rust struct fields are not graph nodes, so the field's type can only come from the struct's declaration text. This follows the Go 2-hop precedent exactly (`matchGoFieldChainCall`, #1276), including its exclusivity rule:

1. **Extraction (TS walker + native kernel, identical, parity-tested):** a call whose receiver is `self.<field>` keeps the owner-field shape — `self.inner.run()` is emitted as `self.inner.run`. Deeper chains (`self.a.b.m()`), call receivers (`self.f().m()`), parenthesized receivers and bare `self` keep the bare name, exactly as before.
2. **Resolution (`matchRustSelfFieldCall`):** owner type = the calling method's qualified-name prefix (`Outer::run` → `Outer`); the field's declared type is read from the owner struct's **own declaration lines** (comment-stripped, line by line — same discipline as the Go helper); the method is resolved **and validated** on that type by `resolveMethodOnType` (confidence 0.85, `instance-method`).
3. **Exclusive:** when the field is declared with an external type, a generic parameter (`T`), a container that doesn't auto-deref (`Option`/`Vec`/`Mutex`/…), or can't be found, the ref **stays unresolved** — it never falls through to the bare-name strategies. That is the safe behaviour the issue asks for, and it is what #1276 already chose for Go.

`rustFieldTypeName` looks through exactly the layers Rust's method-call auto-deref looks through: references (`&`, `&'a mut`) and the owning smart pointers `Box`/`Rc`/`Arc`. `Box<dyn Source>` yields the trait, whose method node the interface-impl synthesizer then fans out to every implementation. `Option<Inner>` is left alone — `self.inner.take()` is Option's method and must not become `Inner::take`.

Why it stacks on #1596: the owner is taken from the method's qualified name, which for a generic/lifetime impl was the trait's name before that fix.

## Measured on ripgrep (110 `.rs` files, #1596 build vs this branch)

| | #1596 | this PR |
|---|---|---|
| nodes | 4029 | 4029 |
| `calls` self-edges | 279 | **146** (none of the `self.<field>` shape remain — 116 bare-receiver, 30 other dotted) |
| `self.<field>.m()` calls resolved through a validated field type | — | **292** (`DecompressionMatcher::command -> GlobSet::matches`, `Parser::find_long -> FlagMap::find`, `Haystack::path -> DirEntry::path`, …) |
| `self.<field>.m()` calls left unresolved | — | **417** — every sampled one is a std/container method: `self.commands.push`, `self.child.wait`, `self.pre.is_some`, `self.colors.clone`, `self.path_terminator.unwrap_or` |
| `calls` edges total | 9150 | 8878 (the 272 removed are the former bare-name guesses for those 417) |

The issue's three sites: `walk.rs:824` now resolves to `IgnoreBuilder::add_custom_ignore_filename` (was a self-edge); `walk.rs:1195` (`self.its.next`, `IntoIter`) and `globset/lib.rs:983` (`self.matcher.is_match`, `Regex`) are parked as unresolved instead of guessed.

The issue's repro gives `Outer::run -> Inner::run` (`instance-method`, confidence 0.85) on both the kernel path and `CODEGRAPH_KERNEL=0`.

## Tests

- `__tests__/extraction.test.ts`: only the single-hop `self.<field>.<method>()` call keeps the prefix; deeper / call / parenthesized / bare-`self` receivers and a local receiver are unchanged.
- `__tests__/resolution.test.ts` (end-to-end, Cargo layout): the issue's repro → `Outer::run -> Inner::run`, no self-edge; an external field type (`std::vec::IntoIter`) with a local `next` decoy → no edge at all; `Box<Inner>` and `&'a mut Inner` resolve, `Option<Inner>` does not (even though `Inner` declares the method); a generic `T` field → no edge; genuine `self.run()` recursion keeps its self-edge; the #1588 repro's `UsesFile::go` / `UsesBuf::go` resolve to `FileSource::read` / `BufSource::read`, and a `Box<dyn Source>` field lands on `Source::read` with the synthesizer fanning out to both impls.
- `__tests__/fixtures/kernel-parity/torture.rs` grows the receiver shapes; all 15 kernel parity suites pass against the rebuilt kernel (147 tests).
- Full `npm test` on this branch: 189 files, 3187 passed, 9 skipped, 0 failed.

Re-index after upgrading.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

https://claude.ai/code/session_01LxZj6W6Y1SHXwvpT3uwJpK
2026-08-26 10:37:50 -05:00
Colby MchenryandGitHub 12f7a59f26 fix(rust): qualify generic/lifetime impl methods by the implementing type, not the trait (#1588) (#1596)
Fixes #1588.

## What was wrong

The receiver of an `impl` block — the name that qualifies its methods, owns the `contains` edge, and sources the `implements` edge — was found positionally: the **last bare `type_identifier` child** of the `impl_item`. That works for `impl Source for FileSource`. But once the implementing type carries parameters it parses as a `generic_type`, and the only bare identifier left is the **trait's**:

```rust
impl Source for FileSource         →  FileSource::read   ✓
impl<T> Source for BufSource<T>    →  Source::read       ✗  (should be BufSource::read)
impl<'a> Iterator for Parents<'a>  →  Iterator::next     ✗
impl Trait for &Foo                →  Trait::method      ✗
```

Two consequences, both reproduced on `main`:

- `BufSource::read` did not exist in the graph, so `resolveMethodOnType("BufSource", "read")` and "who calls `BufSource::read`" had no answer, and every generic implementation of a trait collapsed onto the same trait-qualified name.
- Because the impl's method carried the trait's qualified name, the interface-impl synthesizer treated the impl **body** as a second trait declaration and emitted a dispatch edge from it (`Source::read -> FileSource::read`, registered at the generic impl's line — a body of `{ 0 }` containing no call at all).

The native kernel (`rustlang.rs`) mirrored the positional rule deliberately, bug-for-bug, to hold byte-parity with the TS walker — its header said "preserve, never fix via the grammar's trait:/type: fields". So the fix has to land on both sides at once.

## What this does

Both extractors now read the grammar's **named fields** instead of scanning children. One shared rule (`rustImplTypeName` in `languages/rust.ts`, `impl_type_name` in the kernel), applied to `impl_item.type`:

| implementing type | node | receiver |
|---|---|---|
| `Foo` | `type_identifier` | `Foo` |
| `Foo<T>` / `Foo<'a>` | `generic_type` → its `type` field | `Foo` |
| `m::Foo` | `scoped_type_identifier` → its `name` field | `Foo` (was: no receiver) |
| `&Foo` / `&'a mut Foo` | `reference_type` → its `type` field | `Foo` |
| `(A, B)`, `dyn Tr`, `*const T`, `u32`, fn types | anything else | none — extracted as plain functions, exactly as before |

The `implements` back-reference reads `impl_item.trait` (full text, so `fmt::Display` and `From<u32>` keep their spelling) and bails when the field is absent (inherent impl). Everything else — the no-scope impl quirk, the source-order `contains` owner scan, method extraction — is untouched; the `contains` edge simply lands on the implementing type now instead of the trait.

The kernel header comment, the parity test's description, and the two design docs that documented the quirk as "preserve" are updated to say what changed.

## Measured on ripgrep (110 `.rs` files, `main` build vs this branch)

| | main | this PR |
|---|---|---|
| nodes / methods | 4029 / 2202 | 4029 / 2202 |
| impl methods qualified by a **trait** name (node outside that trait's extent) | 61 | **0** |
| `Iterator::*` methods | 2 | 0 |
| duplicate method qualified names | 77 | 42 |
| synthesized `interface-impl` edges originating **outside** any trait declaration (the phantom fan-outs) | 38 | **0** |
| synthesized `interface-impl` edges originating at a real trait declaration | 33 | **52** |
| plain (non-heuristic) `calls` edges | 9098 | 9098 |

So the synthesizer lost every phantom edge and *gained* 19 legitimate fan-outs to implementations it could not previously see as implementations. `contains` edges went 5237 → 5224: the 13 removed were trait→impl-method edges produced by the mis-qualification.

The issue's repro now gives `BufSource::read` at line 12, `BufSource -> Source`, and both synthesized edges registered at the declaration (line 2) — identical on the kernel path and with `CODEGRAPH_KERNEL=0`. (The remaining `UsesFile::go -> BufSource::read` exact-match guess there is the separate `self.field.method()` receiver problem, #1585, which stacks on this.)

## Tests

- `__tests__/extraction.test.ts` (Rust Extraction): method qualified names for generic / lifetime / reference / scoped / generic-trait impls; the trait's qualified name names exactly one node; `implements` refs come from the implementing type for every shape; the `contains` edge lands on the type; tuple / `dyn` impls keep producing plain functions with no `implements` ref.
- `__tests__/resolution.test.ts` (end-to-end): `Source::read` names only the declaration; dispatch fans out to **both** `FileSource::read` and `BufSource::read`, every synthesized edge registered at line 2; neither impl body sprouts a synthesized call.
- `__tests__/fixtures/kernel-parity/torture.rs` grows all the new impl shapes; `kernel-rustlang-parity` (LF + CRLF) passes against the rebuilt kernel.
- `CODEGRAPH_KERNEL_EXPECT=1 npx vitest run __tests__/kernel-*.test.ts` — all 15 suites, 147 tests pass.
- Full `npm test`: 3180 passed, 9 skipped, 1 failed — `mcp-daemon.test.ts > daemon idle-times-out after the last client disconnects`, a 30 s timing test that passed on re-run in isolation (the machine was running four parallel suites and kernel builds at the time); unrelated to extraction.

Re-index after upgrading to pick up the corrected names.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

https://claude.ai/code/session_01LxZj6W6Y1SHXwvpT3uwJpK
2026-08-26 10:36:53 -05:00
1d9de88ef1 feat(config): add codegraph.json "deprioritize" for ranking-only path down-weighting (#982) (#1463)
* feat(config): add codegraph.json "deprioritize" for ranking-only path down-weighting

matchesNonProductionDir hardcodes example/sample/fixture/benchmark/demo,
so a peripheral tree only the project knows about — optional-skills/,
scripts/ — gets no de-prioritization. When helpers there carry generic
symbol names, an exact name match hands them a large bonus and they crowd
out the product code that answers the query (#982).

deprioritize is the RANKING counterpart to exclude: those paths stay
indexed and findable, they just stop outranking first-party code. It is
deliberately distinct from the corpus-frequency discount, which keys on a
name being common and is near-inert on #982's own repro where only two
symbols are named usage.

The -15 path penalty alone is not enough, and measuring showed why: on
that repro a usage() helper sits at 74.8 against 51.2 for the top product
symbol, so -15 lands at 59.8 and still leads. The path penalty is additive
and the name bonus it must counter is additive and larger. A de-prioritized
path is saying its symbol NAMES are not the answer, so the exact-name bonus
is damped to 0.25x there as well — damped, not zeroed, so the tree still
ranks when it genuinely is what you asked for.

Refs #982

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SKXAJMrVrdHS5Uco6ABtky

* fix(config): read deprioritize lazily and apply it in explore too

Review of the first cut found two real defects.

The matcher was built once in wireLayers(), which runs only from the
constructor and from reopenIfReplaced(). The MCP server keeps one
CodeGraph per project root alive for its whole lifetime, so editing
codegraph.json appeared to do nothing until the process restarted --
exclude and include do not behave that way. The predicate now reads
loadDeprioritizePatterns() per call (mtime-cached, one stat) and memoizes
the compiled matcher on the pattern array's identity. A regression test
writes the config after opening the project and fails on the old code.

Explore passed no matcher to scorePathRelevance at either of its two call
sites, so the setting only half-applied -- and #982's reproduction rows
B, C and D are all codegraph explore, which made this the surface the
issue actually reports on. Both sites now pass it.

Explore's hard early-continue filters and its non-production budget cap
are deliberately NOT joined: those REMOVE content, and deprioritize is a
ranking lever by definition. README narrowed accordingly -- it previously
claimed this extends the built-in list, which overstated it.

Also from review: scorePathRelevance takes a boolean rather than a
predicate (the caller already evaluated it, and it was being invoked
twice per result), the predicate body is exception-guarded so a bad path
can never take a search down, the misplaced const moved out from between
imports, two vacuous test assertions tightened, and tests added for the
single-penalty invariant, the deliberate isTestQuery asymmetry, and a
query that genuinely targets the de-prioritized tree.

Refs #982

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SKXAJMrVrdHS5Uco6ABtky

* fix(search): derive the deprioritize name-bonus damping instead of picking it (#982)

The 0.25 scale was a guess. On a 62k-node django index it measurably breaks
the "discount, don't erase" rule the lever is built on: exact-name queries for
symbols that live only in the de-prioritized tree (child, parent, method) fall
behind mere prefix matches (children, all_parents, method_decorator).

The prefix arm of nameMatchBonus tops out below 40, and a de-prioritized node
also takes the -15 path penalty, so 80 * SCALE - 15 > 40 is the bound that
keeps a damped exact match ahead of a prefix match at any corpus shape. 0.75
clears it; crowd-out removal is nearly identical to 0.5 (39 vs 40 of 88
peripheral top-10 slots cleared on django), so the deeper discount bought
almost nothing and cost the invariant.

Two tests pin the bound, including one that fails at the old 0.25.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-22 11:55:14 -05:00
Max HsuandGitHub bc894802ff feat(installer): support project-local Codex installs (#1531) (#1551)
Codex CLI has a first-class project config layer — `.codex/config.toml`
is layer 4 of the loader stack, above the user config at layer 6
(`codex-rs/config/src/loader/README.md` in openai/codex), and it landed
in openai/codex#8354 on 2025-12-22. The CodexTarget's "Codex has no
project-local config concept" note was therefore never accurate, and
`supportsLocation('local') === false` made Codex the one agent that
forces a machine-wide MCP install.

`mcp_servers` is not on the project layer's denylist (which strips base
URLs, model providers, `notify`, profiles and otel — settings repo
contents shouldn't choose), so a project-scoped `[mcp_servers.codegraph]`
is honored.

- Path helpers take a `Location`: global keeps `~/.codex/config.toml` +
  `~/.codex/AGENTS.md`; local writes `<cwd>/.codex/config.toml` and the
  project-root `<cwd>/AGENTS.md` — the same split the gemini and
  opencode targets already use for their local layout.
- Drops the five `loc !== 'global'` early returns from detect, install,
  uninstall, printConfig and describePaths.
- Local install returns a note that Codex only applies a project layer
  in a project marked trusted; untrusted projects load the layer but
  leave it disabled, so a silent success would be misleading.
- Refreshes the two doc comments that used Codex as the example of a
  global-only target (now the Copilot CLI).

Tests: two new cases covering the local write layout, the trust note,
global config staying untouched, and local uninstall leaving the global
entry intact. Both fail against the previous implementation. The generic
per-target contract suite now also exercises codex at location=local.
2026-08-22 11:55:10 -05:00
474f051d3c fix(resolution): load path aliases through tsconfig extends and base configs (#1534) (#1548)
`loadProjectAliases()` read only the root `tsconfig.json` / `jsconfig.json`
own `compilerOptions`, so an Nx-style monorepo — every alias declared in a
`tsconfig.base.json` — got `null` back and every cross-package import fell
through to name-based matching. Silently: no unresolved-import warning, and
the results still look precise.

Two things were missing, and either one alone leaves a common Nx layout
broken:

Fold the `extends` chain into the effective options before building the
alias map. Relative and `node_modules` package specifiers both resolve,
the nearest config wins (tsc replaces `paths` rather than merging), and a
config already on the current chain is not re-entered, so `a extends b
extends a` terminates instead of recursing forever.

`paths` are anchored at `baseUrl` when one is declared — itself relative
to the config that declared it — and otherwise at the directory of the
config that declared the `paths`, which is what tsc does and what keeps
an inherited `src/*` from being read as root-relative.

Read `tsconfig.base.json` as a last candidate. A root `tsconfig.json` is
still authoritative when it exists and reaches the base through `extends`;
the fallback covers the layouts where that never happens — a solution-style
root config (`references`, no `extends`, no `paths`, which is what nx's own
repository ships) or no root `tsconfig.json` at all. A candidate that
contributes no aliases no longer shadows a later one that does.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Colby McHenry <me@colbymchenry.com>
2026-08-22 11:55:01 -05:00
9219967e43 perf(search): seek the name index for exact-name lookups (#1542)
`nodes` carries two name indexes and neither can serve
`WHERE name = ? COLLATE NOCASE`: `idx_nodes_name` is BINARY-collated, and
`idx_nodes_lower_name` is an expression index the planner only matches against
the same expression. All three whole-name lookups in the query layer were
written that way, so each one degraded to a full table scan
(`EXPLAIN QUERY PLAN` reports `SCAN nodes`).

The LIMITs on those queries do not rescue them. SQLite can only stop early once
it has produced LIMIT rows, and the two dominant cases never get there: a query
word that names no symbol at all, and a name with only a handful of definitions.
`searchNodes` runs its supplement once per query term; `findNodesByExactName`
runs two passes per symbol extracted from the question, and extraction is
generous, so a plainly-worded question issues a dozen full scans.

Written as `lower(name) = lower(?)` the same predicate seeks
`idx_nodes_lower_name`. Measured on four indexed repositories, baseline vs fix
in one process (the only difference being how the predicate is spelled):

  query "how does the retry backoff work"    findNodesByExactName   searchNodes
    gin         (2.5k nodes)                    1.27ms -> 0.18ms    3.1 -> 2.6ms
    Alamofire   (4.5k nodes)                    2.39ms -> 0.22ms    4.9 -> 4.0ms
    excalidraw  (11k nodes)                    10.54ms -> 0.17ms   10.4 -> 5.8ms
    django      (62k nodes)                    49.91ms -> 0.17ms   27.6 -> 4.9ms

The seek is flat across all four; the scan grows with the corpus. A one-word
query into `searchNodes` on django is unchanged (~20ms) because a single term's
scan is not what dominates it there.

Lowering the parameter in SQL rather than in JavaScript is deliberate. SQLite's
`lower()` and NOCASE both fold ASCII only, while JavaScript's `.toLowerCase()`
folds Unicode; comparing a JS-lowered parameter against `lower(name)` would
silently stop matching non-ASCII identifiers that NOCASE used to match.

`getNodesByLowerName` is spelled the same way for the same reason. It already
sought the index, but as a bare `lower(name) = ?` it took a pre-lowered
parameter on trust: any input carrying an uppercase letter returned nothing at
all. This is behaviour-neutral for its one caller — `matchFuzzy` lowers in
JavaScript before calling, and `lower()` over an already-lowered string is a
no-op, verified over the ASCII and non-ASCII cases alike. It closes the trap for
the next caller; the non-ASCII gap on the `matchFuzzy` side is a resolution
change and is deliberately not bundled here.

Result sets are unchanged, including which rows the LIMITs keep: entries under
one key in the expression index are ordered by rowid, the same order a table
scan produces. Verified over 14,400 lookups (top-400 names of the four
corpora, probed as stored / upper / lower, against all three call sites) with
zero differences, and end-to-end above with identical result ids.

Tests assert the planner's verdict rather than a wall-clock number, so they are
deterministic: they intercept the SQL each call site prepares and require an
index seek, with a guard that the lookups actually ran. Reverting any call site
turns them red.

Co-authored-by: Colby McHenry <me@colbymchenry.com>
2026-08-22 11:54:27 -05:00
Max HsuandGitHub a74029105a fix(resolution): resolve ES imports targeting .xsjs/.xsjslib files (#556) (#594)
The extraction half of #556 — indexing `.xsjs` / `.xsjslib` as JavaScript — already
landed on main via #654. This PR is now scoped to the remaining resolution gap:
the JS import-resolution list did not include the SAP HANA extensions, so an
extensionless `import { x } from './helpers'` in a `.xsjs` file resolved to
nothing and the cross-file call edge was dropped.

Add `.xsjs` / `.xsjslib` to the `javascript` entry in EXTENSION_RESOLUTION so
those imports resolve to their target file and `codegraph_callers` /
`codegraph_impact` see the edge. One resolution test covers the .xsjs -> .xsjslib
import; the now-redundant extraction/detection tests were dropped (covered by #654).
2026-08-22 11:53:36 -05:00
Max HsuandGitHub cc9ce09256 fix(extraction): detect untracked files inside untracked directories (#1213) (#1215)
git status --porcelain collapses an entirely-untracked directory into a
single '?? dir/' entry. collectGitStatus only recurses into such dirs to
find embedded git repos, so source files in a plain untracked directory
were never surfaced to sync — 'codegraph sync' reported 'Already up to
date' and the watcher missed them too.

Add -uall so git lists individual untracked files. Nested untracked git
repos still collapse to '?? repo/' even with -uall (git never crosses a
repo boundary), so the embedded-repo recursion is unaffected.

Export getGitChangedFiles and add regression tests for both the plain
untracked-directory case and the embedded-repo recursion (no -uall
regression).

Root-cause analysis and fix suggested by the reporter in #1213.
2026-08-22 11:53:33 -05:00
Max HsuandGitHub 340d4b033e fix(swift): remove catastrophic backtracking in Vapor route regex (#1547)
The arg-list group `(?:[^,()]+,\s*)*` was ambiguous: the trailing `\s*`
and the next iteration's `[^,()]+` could both claim the same run of
spaces, so a `.METHOD(...)` call with many comma-separated args that
never reaches `use:` forced an exponential search. Measured on
`app.get(arg0: value0, ...)`: 40ms at 20 args, 647ms at 24, 41.7s at 30,
and no result after 120s at 60.

Anchoring each repetition at a comma (`(?:[^,()]+,)*\s*`) makes the split
unique — `,` is outside the char class, so there is nothing to
re-partition. Same input is now 0.09ms at 1000 args.

Match behaviour is unchanged: all four capture groups are identical on 18
hand-written Vapor route shapes (no args, single/multi path segments,
`X.parameter`, multi-line calls, Environment.get non-matches) and on
200k fuzzed inputs.

Fixes #1544
2026-08-22 11:53:26 -05:00
Colby McHenry ccb0295259 fix(explore): reliably pin extension-less kebab-case file basenames in queries
Previously, naming a kebab-case file without its extension (e.g., `background-image-table` vs. `background-image-table.tsx`) in a `codegraph_explore` query would shred the name into fragments (`background`, `image`, `table`), admitting irrelevant sibling files and crowding out the intended target.

This change introduces a new resolution pass in `extractQueryPaths` specifically for extension-less kebab basenames. Queries now accurately identify and pin these files. Unresolved hyphenated prose (e.g., `cross-call`) is left in the query for FTS without being flagged as an unknown path. Resolution prioritizes explicit slashed/dotted paths and respects an ambiguity budget for common stems to prevent over-pinning.
2026-08-22 09:05:30 -07:00
81e1f4a92f fix: harden daemon and large-index recovery paths (#1562)
* fix: harden indexing recovery and daemon liveness

* test: cover daemon and recovery review gaps

* test: pin that a failure marker never blocks a later successful parse (#1557 retry-discard guard)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: danusha2345 <ewidusoc498@gmail.com>
Co-authored-by: Colby McHenry <me@colbymchenry.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-08-20 12:53:49 -05:00
d8f2eeaddf fix(db): loop-append dense unresolved-ref result rows; make stripped-salvage visible (#1558) (#1576)
Real-world validation of #1575 on indexes damaged by the released v1.5.0
binary surfaced both of these.

getUnresolvedReferencesByFiles chunked its INPUT under SQLite's parameter
limit but appended each chunk's RESULT rows with a spread — every row
becomes a call argument, so a dense recovery sync (the #1541 self-heal
re-indexing 919 files produced 234,440 rows) exceeded V8's argument limit
and killed resolution mid-sync with "Maximum call stack size exceeded",
leaving the graph 226k edges short until another sync resumed the orphans
(and that sweep resolves measurably worse than the batched path — see the
follow-up issue). The failed-ref retry loader had the identical pattern on
unbounded result rows. Both append with a loop now (#1558).

The #1575 stripped-salvage warning also never rendered: init's summary
prints only index_partial warnings and counts only hard errors, so a run
with salvaged files still read as fully clean — and with no hard errors the
detail wasn't written to errors.log either. Salvage entries now carry code
'salvaged_stripped', the summary prints a visible warning naming the files,
and errors.log is written for salvage-only runs.

Validated on real corpora with full-graph dumps: healthy-path inits stay
byte-identical to the pre-#1575 baseline (cpython Lib, Alamofire, with a
determinism control); a realistically-damaged index (41 wiped + 5 missing
files, damage generated by the released binary) heals in one plain sync to
identical per-file counts and an edge set within the normal incremental
residual; pathological mass damage (52% of the repo) completes without
crashing. New regression test reproduces the RangeError on the old code
with 200k pending refs.

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-08-20 12:36:22 -05:00
26045b3159 fix(extraction): decode kernel results in indexAll retry passes; self-heal wiped rows (#1541) (#1575)
The parse-pool workers return kernel-language extractions as an undecoded
buffer transport (nodes/edges EMPTY, tables in kernelBuffers). indexAll's
main loop decodes them (or hands the buffers to the store worker), but its
two retry passes — plain retry and the comments-stripped last resort —
stored the transport as-is: the storage gate passed via errors.length === 0,
zero nodes were inserted, and the files row was written with node_count = 0
while the original error was spliced out of the summary. Any worker
crash/timeout whose in-flight file was a kernel-routed language permanently
recorded that file as "(0 symbols)" — silently, and immune to later syncs
because the stored hash matches the on-disk bytes (#1541; v1.4.1 predates
the kernel path, which is why it was unaffected).

- Both retry passes now materialize kernel results before the gate, store,
  counters, and log lines.
- storeExtractionResult materializes at entry as defense-in-depth, so no
  storage path can persist an undecoded transport again.
- Zero-node rows on symbol-bearing languages (only the wipe produces these —
  every real extraction stores at least the file node) are dropped during
  full-reconcile sync and indexAll so already-affected files re-index
  automatically after upgrading. Scoped watcher syncs leave rows outside
  their scope untouched.
- The comments-stripped salvage now downgrades the failure to a visible
  warning instead of erasing it: the recovered result can be incomplete, and
  reporting clean success made a fresh index quietly disagree with a later
  per-file re-parse of the same bytes (#1565's init-vs-sync divergence).

Repro (released 1.5.0): CODEGRAPH_PARSE_TIMEOUT_MS=1 codegraph init on any
Python project → "Retry OK: <file> (0 nodes)" and permanent
"(python, 0 symbols)" rows. Fixed build stores real symbols under the same
forcing, and heals rows wiped by prior runs.

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-08-20 12:16:51 -05:00
Colby McHenry 238dbc5cec fix(explore): accurately resolve query file paths and find camelCase symbols
Previously, `codegraph_explore` queries explicitly naming files by path (e.g., `src/routes/m/projects/[id]/runs/[runId]/+page.svelte`) were shredded. Bracketed path segments exploded into "named symbol" seeds, and FTS on fragments like `page` or `runs` admitted every sibling file, starving the user's intended target.

This change introduces:
- **Query path pinning:** File paths named in a query are now resolved against the index, "pinned," and stripped from the query. Pinned files are guaranteed inclusion, top ranking, and fair allocation. Unresolvable path-like spans are reported.
- **Segment vocabulary supplement:** Natural language query terms (e.g., "auto-scroll to bottom") can now reach camelCase identifiers (e.g., `pinFeedIfNearBottom`, `feedAtBottom`) by matching against their constituent segments.
- **Variable seeding:** `variable` and `constant` node kinds are now included in identifier seeding, improving recall for `$state`-style variables common in frameworks like Svelte.
2026-08-20 09:10:07 -07:00
Colby McHenry d289bf84d3 Merge main into fix/union-declarations-not-indexed
Resolves the CHANGELOG conflict — main and this branch each prepended a
bullet to [Unreleased] > Fixes; both are kept. Everything else auto-merged,
including src/mcp/tools.ts, which main reworked heavily for the explore
allocation/displacement work (CG-28/31/36/38) while this branch added the
`union` kind to its container sets.

Verified on the merged tree with the native kernel built: 3070 passed,
9 skipped, 0 failed.
2026-08-07 21:26:53 -05:00
Colby McHenryandClaude Opus 5 5b0c4b8b93 fix(resolution): trait dispatch reaches union implementors (#1515)
Making unions first-class nodes leaves the third loss in #1515 open:
interfaceOverrideEdges enumerates its concrete side as ['class','struct'],
so a union implementor is skipped even though it now has a real node and a
real `implements` edge. "Who implements this trait" then answers wrongly
rather than incompletely — the struct beside it bridges and the union does
not.

Add 'union' to that tuple, plus a regression test that pins the Rust
trait -> union-impl hop (the struct implementor is the control proving the
synthesizer ran). Verified the test fails on the union assertion alone
before this change.

No EXTRACTION_VERSION bump: main is already at 25 against v1.5.0's 24, so
existing indexes are flagged stale for the next release regardless, and
over-bumping is what turns the re-index hint into noise.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-07 21:23:06 -05:00
Colby McHenry 493d4210f1 Merge branch 'main' into feat/copilot-installer-targets
# Conflicts:
#	CHANGELOG.md
2026-08-07 13:49:22 -05:00
Colby MchenryandGitHub 99f2ebf0d1 Merge pull request #1527 from colbymchenry/bugfix/CG-38
CG-38: guarantee an agent-named symbol renders, wherever it sits
2026-08-07 13:19:25 -05:00
Colby McHenry 2c708caf7c Merge branch 'main' into feature/CG-35 2026-08-06 21:17:56 -05:00
Colby McHenry 89c53ddf24 fix(explore): guarantee an agent-named symbol renders, wherever it sits (CG-38)
`codegraph_explore` never returned `queueMessage` (L1087) or
`flushQueuedMessages` (L1102) from a 1,414-line file, on a symbol bag or a
prose question, even with that file at rank #1 holding 67% of the envelope —
the agent got a same-stem `QueuedMessage` interface at L70 and had to Read the
file for the functions it had named. Pre-existing at every build including
pre-epic (controlled bisect, index held fixed).

Two independent causes:

1. `buildFlowFromNamedSymbols` returns the Flow prose AND the set of node ids
   the agent named — and the latter is the whole guarantee, since it injects a
   named def into its file's cluster ranges at importance 9. Its bail-outs
   returned EMPTY, zeroing the identity whenever there was nothing to PRINT.
   Two sibling closures that never call each other produce no chain, no synth
   hop and no boundary, so both defs lost importance 9 and the file rendered
   from its head. `identityOnly()` now separates the two, gated on
   shape-precise tokens so a prose word that exact-matches a callable cannot
   promote itself.

2. The ceiling trim filled in SOURCE order, so an over-ceiling render always
   dropped the END of a large file first. The shrink HAD kept both symbols
   (1022-1121); the trim cut back to 839. `windowToCeiling` now takes the
   spine call site plus every importance>=9 member as focus lines, tries the
   full ceiling first, and splits the held-back reserve evenly with
   carry-forward — greedy-in-source-order reproduced the bug one level down.

The shrink's loose size estimate is left alone deliberately, and the comment
now says why: making it exact was built and measured WORSE (it stops at the
last member that fits whole and the released bytes carry forward to
lower-ranked files, costing payroll-go's `s.store.Upsert`). `bound()` clamps to
the ceiling anyway, so the slack costs no bytes; it just must not pick the
survivors, which is what the trim now handles.

The measurement gap this closes: every existing probe is aggregate — envelope
share, per-file spend, source totals, file counts — and all are green on a
response that returns 25K from the right file and omits the named function.
`probe-named-symbol.mjs` checks the definition LINE against the response's
rendered lines, per symbol.

Suite envelope byte-identical to main on all six repos; probe-allocation 4/4,
no starvation flags; 180 files / 2,997 tests green. Fixture: 7/7 fail on main,
7/7 pass here, deterministic over 4 runs per arm.
2026-08-06 21:11:51 -05:00
Colby McHenry eed16447c3 fix(explore): shrink a later cluster into the remainder instead of dropping it (CG-36)
A file's ranked clusters were all-or-nothing past the first one: the top-ranked
cluster was taken (shrunk to fit when it had to be) and every cluster below it
was rendered whole, then either fit the remainder or was dropped entirely. On a
file whose top-ranked cluster is TRIVIAL that discards the answer — django's
`db/models/sql/query.py` kept a 22-line glue cluster and dropped the 624-line
`Query` body, spending 1,923 of a 7,947 reservation; okhttp's
`RealInterceptorChain.kt` did the same behind its import header.

The response stayed full, which is why this was invisible: the unspent
reservation carried forward exactly as designed and a file scoring a fifth as
much took the bytes.

Two sites, the same rule — hold the remainder while it is still worth a section
(CG-26's between-FILES lesson, applied between CLUSTERS):

- selection now shrinks a later cluster into what is left of the file's budget,
  by the same whole-member rule the first cluster already used;
- the ceiling trim re-renders the weakest cluster into the room that remains
  before dropping it. On excalidraw's `typeChecks.ts` the section-cost estimate
  missed by 13 chars and a 1,512-char cluster — the file's highest-SCORING one —
  was thrown away to pay for it.

Cluster RANKING is untouched: measured, both real cases lost on `maxImportance`,
not on the density tiebreak the issue suspected, and density-first is what keeps
Alamofire's `Session.swift` from burying its methods under the property list.

Suite (6 repos, clean-rebuilt indexes): all 8 starvation flags cleared,
+1,012 source chars net. django's `sql/query.py` 1,923 -> 10,082 of 7,947,
okhttp's `RealInterceptorChain.kt` 1,474 -> 6,038 of 6,058, gin's
`routergroup.go` 3,273 -> 5,632. okhttp trades its rank-6 file (score 21) for
+7,196 chars in the two files that answer the question.

Ships two fixtures pulling in opposite directions (`starved-cluster-ts` and
`dense-header-ts`), a `spendShareAtLeast` gate in probe-allocation, and
probe-file-spend.mjs — a standing per-file reservation-vs-delivered sweep.
2026-08-06 15:10:46 -05:00
Colby McHenryandClaude Opus 5 9efae0f8f2 fix(explore): damp ambient declaration files on flow queries (CG-28)
A file that declares nothing but types and that nothing in the index depends
on — a hand-written ambient `.d.ts` of global shims, vendored typings, module
augmentation — cannot answer a flow question: no bodies, no call edges, no
behaviour, nothing typed by it. But the identifiers it declares are exactly the
generic ones a prose question uses (`Body`, `Message`, `ImageMetadata`,
`ReadableStream`), so on term overlap it out-scored the implementation. Measured
on the new fixture: rank #1 and 51% of delivered source, with the flow's own
entry file pushed out of the response entirely.

Measured first, per the issue: the Wrangler `worker-configuration.d.ts` that
opened this is already handled by CG-25's banner detection, worth 15-46 points
of envelope share across four flow queries. CG-25 credited; only the un-bannered
case needed anything.

`rankPenalty` now multiplies score and graph mass by 0.5 for such files, taken
as the STRONGER of it and the generated penalty rather than multiplied — one
property two signals see must not be charged twice. Detection is structural, not
by extension, and four conditions deep. Two of them were forced by measurement:
requiring every symbol to be type-level takes the corpus flag rate from 1-18%
(which swept in Kotlin sealed classes, Rust mod.rs re-exports and django's
locale tables) down to 0-4%; requiring that nothing depends on the file
separates an ambient shim from a working types module, and without it the rule
demoted displacement-ts's pipeline `types.ts` and broke the CG-31 gate.

A query that NAMES a declared type is exempt, so a question about a type still
reaches its declaration at full weight. Precise tokens only, so "…the file
body…" cannot exempt a `Body` interface it never meant to name; this needs its
own set because `namedSeedIds` is callable-only and a type never becomes one.

Regression evidence in docs/benchmarks/explore-declaration-only-cg28.md:
6-repo envelope sweep byte-identical against a clean baseline build, zero
ambient files reach the candidate set on VS Code across five queries, corpus
flag rate 0-0.74%, both allocation fixtures PASS, full suite 2,978 green.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-06 14:35:56 -05:00
Colby McHenry 91cb5b4317 measure(explore): the factory-closure envelope premise does not hold (CG-27)
CG-27 asked whether the >50%-of-file envelope drop should cover `function` /
`method`, so a `createFoo()` factory returning an object of closures stops
merging every closure inside it into one cluster. Measured on a hermetic
fixture, it should not, and the issue is closed as obsolete with CG-30 credited.

Two mechanisms already absorb the shape. shrinkCluster orders members by
(importance desc, size ASC) and refuses any member that overruns the cap once
something is kept, so a file-spanning member is only selected when it is the
sole member of the top importance tier — eight of nine query shapes never
selected it at all. When it IS selected, CG-30 windows it on whole lines, so
the file still delivers bounded, readable source (6 of 9 closure definitions
in that configuration).

Dropping the range instead SPLITS the file, and only the first-chosen cluster
may be shrunk: a trivial 7-line cluster won the density tiebreak and the
answer-bearing cluster was dropped whole — rank-#1 file 7,539 chars and 7 of 11
closures to 397 and none. Reaching the same intent more carefully (defer the
envelope MEMBER inside shrinkCluster, leaving clustering untouched) is noise:
69 vs 68 closure definitions across nine query shapes. Nothing shipped.

Adds the fixture, the probe, a standing gate on the outcome, and the record —
including a real defect the measurement exposed on the epic tip: django's
query.py leaves 8,212 of 10,135 unspent and drops a score-290 cluster to keep a
score-14 one. Filed separately.

No behaviour change, so no CHANGELOG entry.
2026-08-06 14:07:22 -05:00
Colby McHenry d49265043c test(explore): add the factory-closure fixture and its selection probe (CG-27)
A file whose top-level symbol spans almost all of it — createFoo() returning
an object of closures — is how Svelte 5 rune stores, React custom-hook modules,
IIFE module-pattern JS and Zustand's create((set,get)=>({…})) are all written.
probe-factory-closure.mjs measures what such a file DELIVERS from within: which
inner symbols' definitions reach the agent, not how many bytes did.
2026-08-06 13:58:36 -05:00
Colby McHenryandClaude Opus 5 dc4fd755ef merge: recognize Wrangler-style generated banners (CG-25)
A generated Cloudflare Wrangler ambient-types file was not flagged generated, so
it ranked with no penalty and competed with hand-written source on generic token
overlap. The banner shape it uses — "Generated by <tool> by running <command>" —
matched none of the existing content patterns, all of which require DO NOT EDIT,
a standalone @generated, or the "auto(matically) generated by" phrasings.

Precision is held by requiring TWO 'by' clauses: the banner must name a tool and
then say 'by running'. Ordinary prose ("the report is generated by running the
nightly job") has only one and does not match.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-06 11:17:15 -05:00
Colby McHenryandClaude Opus 5 57e0854213 fix(explore): recognize Wrangler-style "generated by … by running" banners (CG-25)
Cloudflare Wrangler's `worker-configuration.d.ts` (~12k lines of ambient
types) carried no banner any GENERATED_CONTENT_PATTERNS entry matched:
every existing marker requires `DO NOT EDIT`, a standalone `@generated`,
`<auto-generated>`, or the literal `automatically/auto-generated by`
phrasings. Wrangler emits a bare `Generated by Wrangler by running
`wrangler types``, so the file ranked with pen 1.00 and won 79.4% of an
explore envelope on generic token overlap alone (CG-24).

The discriminator is the reproduction instruction, not the word
"generated": the banner must name a tool AND then say `by running`, i.e.
two separate "by" clauses. That keeps prose out — "the nightly summary is
generated by running the ETL job" has only one — while catching every
CLI-driven emitter that tells you how to regenerate.

Precision swept over 441,856 files across the whole local source tree: 5
hits, all genuine Wrangler output, no false positives.

Isolated before/after on the CG-24 repro (same query, same index, only
the `files.generated` flag differing):

  before  pen 1.00  score 115.0  share 79.4%  3 files rendered
  after   pen 0.30  score  35.4  share 21.1%  4 files rendered

The new pattern stays in the existing table position, below the header
window the detector scans, so the module still does not classify itself.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-06 04:54:05 -05:00
Colby McHenryandClaude Opus 5 02ee151e46 CG-35: give the sync-convergence suite teeth against the rebind pass
The suite passed unchanged with `CODEGRAPH_NO_REBIND=1`, so the larger half
of CG-33 — the rebind pass — had no coverage at all.

The cause was the ground truth, not the cases: `rebuildEdgeSet` called
`indexAll()` on the live handle. That is not a rebuild. Every file hashes
identical, so the store writes nothing (`nodesCreated: 0`), no reference is
re-created, and every edge survives — the comparison read the synced index
against itself and could never fail. It now goes through `CodeGraph.recreate`,
which deletes the database file the way the CLI's `index` command does.

With a real rebuild, three existing cases fail under the kill switch. Adds two
more for the rules that carry the risk:

- an edge with no `refName` stamp (older engine) and a synthesized
  (`provenance='heuristic'`) edge are never deleted — both planted directly,
  and each verified load-bearing by mutation;
- a name over the 500-edge ceiling is declined losslessly rather than
  rebound in part, with a rare name in the same sync as the control that
  proves the pass ran.

The per-file-vs-batch-wide delta rule is likewise confirmed by mutation: a
batch-wide name set fails its case.

CODEGRAPH_NO_REBIND=1 now fails 4 cases; unset is green; full suite green.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-06 04:45:37 -05:00
Colby McHenryandClaude Opus 5 03893b0ab9 CG-33: converge incremental sync with a full rebuild
A live, auto-synced index did not converge to a clean rebuild of the same
tree — 4.3% of distinct edges wrong in both directions on this repo's own
index, overwhelmingly `calls`, which is what flow queries traverse and what
explore's file ranking weights. Silent: nothing warned, and the symptom read
as "codegraph isn't very good" rather than "this index needs rebuilding."

Two causes, and the fix needed both. Resolution binds a reference to one of
the same-named definitions PROJECT-WIDE, so a definition appearing or
vanishing changes the correct answer for references in files the sync never
touches — and those references resolved successfully once, which deletes
their unresolved_refs row, leaving nothing to revisit them with (#1240's
retry only revisits refs parked as failed). Separately, when nothing
disambiguated the candidates the winner came down to rowid, i.e. the order
files happened to be WRITTEN, which differs between a scan-order full index
and a sync that appends each file as it changes. That second one is why
re-resolution alone could not converge: re-resolving against the identical
graph still picked a different candidate.

So getNodesByName now orders by (file_path, start_line) — a property of the
code, not of the write order — and sync computes a definitionDelta and
re-opens the resolution edges whose answer it may have invalidated,
re-inserting each as the reference that created it for the orphan sweep to
bind against the post-sync graph.

The delta compares `file\0name` pairs per file rather than one name set over
the batch: a commit that adds `collect` to a new file while an unrelated
changed file already defines `collect` cancels out of a batch-wide set, and
that miss was the largest residual class in the first measurement.

Conservative where the failure modes are asymmetric — a wrong deletion is a
permanent edge loss, a missed rebind is only residual drift. Edges without a
refName stamp are never touched (nothing to restore them from), sources the
sync already re-extracted are skipped, and a per-name ceiling declines the
generic names. Edges are deleted before the sweep re-inserts, since
INSERT OR IGNORE against idx_edges_identity would otherwise keep both rows
when a reference rebinds elsewhere.

Replaying real commits of this repo through sync, then diffing against a
rebuild: 16 commits 48 -> 0; 80 commits 1,634 -> 361, with the actively
misleading direction (stale edges the index keeps asserting) 671 -> 2.
Index and sync wall-clock are unchanged; the ORDER BY costs 18% per uncached
name lookup, which never reaches wall-clock because the resolver memoizes it.

The 357-edge residual at 80 commits is one pre-existing class: refs to
generic names (`push`, `join`) parked above #1240's per-name retry ceiling,
which a rebuild resolves into cross-language garbage — a TS test file
"calling" an R method. Converging there would mean manufacturing wrong edges,
so it is left alone. And no drift metric in `codegraph status`: it cannot be
computed without the rebuild it would be recommending, and a proxy would fire
on that residual and train users to ignore it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-06 04:32:40 -05:00
ctype_lab e2195940fb fix(union): complete downstream container handling 2026-08-06 17:50:25 +09:00
Colby McHenryandClaude Opus 5 7cbde95ce2 fix(explore): pay every admitted file on every render path (CG-26)
The invariant this closes: every admitted file receives at least its
reservation before any file draws on carry-forward slack. CG-30 bounded an
oversize cluster member and CG-31 gave the cluster path a displacement guard;
three holes were left, and each one starved a file that had been admitted,
reserved and — in the worst case — rendered.

1. The whole-file arms had no displacement guard. BUY's fit test read
   `renderCeiling - totalChars` (everyone's room) while its source-space
   sibling refused the same trade, and GRACE was not fit-tested at all.
   okhttp's CallServerInterceptor.kt shipped 8,499 chars on a 5,964 funded
   ceiling and the rank-6 file below it delivered nothing. Both arms now test
   the render they actually produce against `fundedHeadroom`, and a whole
   render that does not fit falls through to clustering instead of skipping
   the file.

2. Every section was charged a flat 200 chars while a real header runs
   300-500. The loop believed it had room it did not have — okhttp allocated
   26,601 against a 24,400 ceiling — so the final truncation threw a
   fully-rendered section away. Sections are charged their real cost now, the
   owed-below arithmetic uses a per-file overhead estimated from the file's own
   symbols, and a marginal overrun trims the weakest cluster (or windows the
   last one into the room that is left) rather than skipping the file over a
   rounding difference.

3. `owedPayableBelow` held all-or-nothing. When the last admitted file's FULL
   reservation no longer fit, nothing was held for it: on the precise-query
   fixture the rank-5 file took 4,134 chars against a 2,948 reservation while
   rank 6 — admitted, reserved 2,539 — was left 4 chars and skipped. It now
   holds the remainder while that remainder is still worth a section
   (MIN_CHARS).

And the epilogue is budgeted instead of discarded. The flat 600-char margin was
neither the epilogue's size (1,064 gin, 1,788 django, 2,231 excalidraw) nor a
bound on it, so four of six suite repos shipped with no pointer list and no
reminders at all. The loop now reserves the epilogue's FLOOR — the one line
that says an uncovered area exists, plus a pointer for every file whose bytes
were deliberately withheld (CG-12) — and the rest is fitted to the room that
actually remains, in priority order, entry by entry. Sized from the real
strings; no constant was swept against the suite.

Deterministic, same clean-rebuilt indexes, baseline = CG-31 tip:

  repo         base source   new source   files      ceiling
  django            20,791       20,878   6 -> 6     was discarding its epilogue
  tokio             21,521       21,607   5 -> 5     was discarding its epilogue
  okhttp            19,034       18,870   5 -> 6     +1 file delivered
  excalidraw        20,204       19,652   8 -> 8     keeps its pointer list
  gin               10,776       10,776   4 -> 4     byte-identical
  alamofire         11,662       11,662   2 -> 2     byte-identical

No repo truncates any more and none loses a file. okhttp and excalidraw trade
164 and 552 source chars on their LAST-ranked file for the pointer list naming
what the response could not cover — bytes the CG-31 tip only had because it
over-filled a ceiling it mis-measured and then discarded the epilogue whole.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-06 03:45:28 -05:00
ctype_lab e922563e05 fix(resolution): recognize union instantiation 2026-08-06 17:11:26 +09:00
ctype_lab 6978acc92e feat(extraction): model union declarations distinctly 2026-08-06 17:10:52 +09:00
Colby McHenryandClaude Opus 5 f1fecb8232 fix(explore): fund the guard from room that exists, and cut the epilogue first (CG-31)
Two corrections found by measuring the first cut of the guard against the
6-repo suite. The first version held back the FULL sum of the reservations
below a file. On django that took 2,319 chars off a file the agent receives
and handed them to a section the hard ceiling then threw away — the guard's
own failure mode, one layer down. tokio lost 1,298 the same way.

1. `owedPayableBelow` — hold back only the prefix of what is owed below that
   the response can still PAY, in rank order. A promise the ceiling cannot
   reach is not a claim on this file's bytes.

2. The final truncation now spends the EPILOGUE before it spends a rendered
   file section. It used to cut at the last section header, dropping that
   section AND the trailing notes; dropping the notes alone is almost always
   enough. A section is source the agent otherwise has to Read; the epilogue
   is a pointer list and two reminders, and the note that replaces it carries
   the "explore these names" instruction forward.

Also count `flow.text` in `totalChars`. It is prepended to `lines` to make the
final output, so the render loop always spent against a ceiling it was ~2K
under on symbol-bag queries.

Deterministic, same clean-rebuilt indexes, both builds (baseline = CG-30 tip):

  repo         base source   new source      files
  django            20,033       20,791   5 trunc -> 6
  excalidraw        18,776       20,204   7 trunc -> 8
  okhttp            15,628       19,034   4 trunc -> 5
  tokio             20,340       21,521   4 trunc -> 5
  gin               10,776       10,776   4 -> 4   (byte-identical)
  alamofire         11,662       11,662   2 -> 2   (byte-identical)

No repo delivers less; four stop truncating. `funded` in the diagnostic now
reports the render CEILING the guard allows, which is what every render path
is actually bounded by.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-06 02:59:46 -05:00
Colby McHenryandClaude Opus 5 089dcc276f fix(explore): hold back what is still owed below a clustered render (CG-31)
Carry-forward slack let a file spend what the files ABOVE it left on the
table. Nothing held back what was promised BELOW it. The whole-file BUY arm
has always refused that trade (`owedBelow`); the cluster path read `headroom`
— what is left before the hard ceiling — instead of what is still owed, so
`fileBudget` and `SPINE_CEILING` could pay a 1.5x overshoot out of another
file's reservation.

`fundedHeadroom` is the same inequality in the units the cluster path spends
in: source PLUS the per-section overhead each unreached file will charge.
Floored at the file's own reservation — a kept promise is not a displacement —
and it is <= `headroom` by construction, so it is the only bound the three
render sites need. The skeleton path's `bodyCap` takes it too.

Measured on `__tests__/fixtures/displacement-ts` (a 4-stage pipeline padded
past 500 files, where the 24K envelope genuinely saturates the 24.4K render
ceiling):

  before  ingest.ts emitted 9,301 on a 6,289 spendable, then lost the whole
          section to the final ceiling — 0 delivered. types.ts and sink.ts
          skipped `budget-whole-file`. 3 of 6 admitted files delivered.
  after   ingest.ts bounded to the 4,913 actually free. 6 of 6 delivered,
          envelope 14,908 -> 22,066.

The self-query allocation fixture flips back to PASS with it, on a clean full
rebuild of this repo's index (CG-33). Its `afterCG30` verdict blamed an
over-RESERVED incidental file; the reservation was identical in both arms —
the file was over-SPENDING. Recorded honestly in `afterCG31`.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-06 02:44:59 -05:00
ctype_labandClaude Opus 5 11acc504b5 test(union): regression cases + kernel-parity torture coverage
Four cases in extraction.test.ts: a Rust union carrying an
`impl Trait for` edge and owning the impl's method; a named C union
alongside a forward declaration that must NOT mint a node; a
`typedef union` taking the typedef name with no `<anonymous>` twin; a
C++ union with a member function.

Verified they fail without the fix on BOTH extraction paths — the wasm
walker via CODEGRAPH_KERNEL=0 and the kernel with a staged build.

torture.c / torture.rs gain the same shapes. The parity gate compares
the two walkers rather than a snapshot, so the fixtures do not detect
the bug on their own — they pin that the fix stays SYMMETRIC. The
regression tests above are what pin that it is present.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-06 15:47:09 +09:00
Colby McHenryandClaude Opus 5 765c06aa40 fix(explore): bound how far an oversize cluster member may overshoot (CG-30)
shrinkCluster keeps an oversize cluster's highest-importance member WHOLE on
purpose — an empty file section sends the agent to Read, the outcome explore
exists to prevent. What it lacked was a bound, and "never empty" quietly meant
"never bounded": on the reporting repo one file emitted 22,376 chars against a
9,181-char reservation (2.44x), past both the per-file budget and the spine
ceiling. That overshoot is what collapses `headroom` for every file below it.

The same rule has a second face. When the top member is bigger than the whole
response ceiling, the file does not overshoot — it is dropped entirely at the
renderCeiling check, so the agent gets nothing for a file it named.

renderCluster now takes a ceiling (1.5x what the file may spend — the same
multiple SPINE_CEILING already draws, and never below the cap, so a cluster
that fits is untouched). Past it the member is WINDOWED on whole lines rather
than emitted whole or dropped: leading window plus, on a flow cluster, a window
on the spine's call site. A partial window shorter than 12 lines is dropped
instead — a sliver in the session record forces the next call's dedup to shred
the block around it or re-send it — unless nothing else was emitted, where the
never-empty floor wins.

Measured on the new fixture, pre-fix vs post-fix:
  monthly.ts    12,391 chars on a 3,334 budget (3.7x)  →  4,941 (1.48x)
  quarterly.ts  dropped, no headroom left               →  4,004 delivered

Also: the diagnostic now reports `spendable` (reservation + inherited slack)
alongside `reserved`. Every render bound reads the former, so reporting only
the latter makes an ordinary carry-forward read as a file spending over budget
— and it made the overshoot this issue is about unmeasurable. A windowed file
is now flagged `clipped` too, instead of presenting a window as the whole file.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-06 01:44:45 -05:00
Colby McHenry ab38d1f090 feat(explore): point at source this session already sent, don't send it twice (CG-18)
A later explore call re-served whatever it re-ranked, so on the #1500 report
the 4th call spent its envelope on the spine the 1st call had already
delivered. CG-17 recorded what was served; this acts on it.

What a withheld span becomes is the whole design: a POINTER, never a silence.
An insufficient-feeling response is what sends an agent to Read, and one or
two of those early in a session teach it to abandon codegraph — so the
replacement names the file, the symbols and the line spans, and says both
that the source came from THIS conversation and that the file has not changed
since.

- Content fingerprint, not the drift flag, gates it. They answer different
  questions: two calls inside one drift window served the same current bytes,
  while a file edited AND re-synced between calls is never "stale" and yet
  the agent's copy is now wrong. An edited file re-emits in full.
- Only a covered run of >= 8 lines is replaced, and a remainder under 160
  chars folds into the pointer. Below those the pointer costs more than the
  source and the block reads as shredded — a fence holding `228\t` is a
  broken-looking response, which is the expensive failure.
- The reclaimed bytes go to files the agent has NOT seen, two ways: a smaller
  `sourceSpent` hands slack down CG-21's carry-forward pool, and a fully
  back-referenced file gives up its maxFiles slot the way a cliffed one does.
  Within a file, the cluster shrink now reads the DEDUPED length, so it never
  drops new symbols to make room for source it isn't sending.
- If dedup suppresses everything and nothing new takes its place, the top
  suppressed file is spliced back in whole. An all-pointer response is the
  shape that reads as "codegraph found nothing"; one re-served file is the
  cheaper mistake.

Kill switch: CODEGRAPH_EXPLORE_DEDUP=0.
2026-08-05 13:47:24 -05:00
Colby McHenry fc31b1e2bf feat(mcp): remember what explore already served this session (CG-17)
Explore answers every call as if it were the first: no record of the files
and line ranges it already sent, so a 4th call re-serves the 1st call's
spine and the tier call budget can only be asked for, never enforced.

Track it per MCP session, per resolved project root — files, coalesced line
ranges, bytes, and the call's index in the session. Nothing reads it yet:
the response is byte-identical, which the suite pins against an untracked
call of the same query.

The daemon shares ONE ToolHandler and a pool of worker threads across every
connected client, so the state can live neither on the handler nor in a
worker. It lives on MCPSession and is handed to execute() per call; the
session's view rides DOWN on the args and the call's emission rides BACK on
the ToolResult, both as plain properties so they survive the structured
clone to and from a worker. execute() records the emission on the main
thread and deletes it unconditionally — including for callers that track
nothing, like the CLI — so it can never reach the wire. A view a client
spells itself is discarded rather than trusted.

Ranges are reported by the render loop itself (buildSection now returns the
spans it slices alongside the text), and only files that survive the final
hard-ceiling truncation are recorded. Where a bound forces a choice the
record keeps FEWER ranges than were emitted: under-reporting re-serves
something the agent has, over-reporting withholds source it never saw and
costs a Read.

Every bound caps detail only — callCount keeps counting past eviction, so
CG-19's decay can't reset itself every 8 calls.
2026-08-05 13:24:06 -05:00
Colby McHenry fa7fb8d127 fix(explore): spend the reservation instead of dropping it (CG-21, #1500)
A file whose proportional reservation lands below its own size stopped
rendering whole, and the fallback cluster render could leave most of that
reservation unspent — the bytes were neither delivered nor redistributed.

Found by CG-15's agent A/B on the express control: `lib/utils.js`, the
top-ranked file, was reserved 3,870 chars and spent 583. The whole-file
grace bound (reservation + a sliver) sat just under the file's 5,293
bytes, so the whole render was declined and three matched symbols became a
stub. The source envelope fell 13,849 -> 9,241 against an UNCHANGED
budget, and the agent Read the file back four times in 1 run of 3.

Two levers, per the task's candidate fixes:

- WHOLE_FILE_BUY_FRACTION: a reservation that already covers 60% of a
  file buys the whole file. Funded from ONE shared overshoot pool sized
  at 15% of the envelope, spent in rank order. Per-file funding is the
  version that fails, and it fails the same way the bug does — the merit
  test is a ratio, so several files qualify at once and N independent
  overshoots push the last section past the render ceiling. Measured on
  the payroll fixture: three files bought whole and `payslip_builder.go`
  was dropped entirely. A dropped section is strictly worse than a
  clustered one.

- Reservation carry-forward: what a file cannot spend goes to the next
  file down, bounded by MAX_SHARE. Tracked as two running totals rather
  than a `spent` variable threaded through the render loop's dozen exit
  paths, so no path can forget to account, and symmetric — a buy that
  overshoots suppresses slack until a later under-spend covers it.

Express reproducer: `lib/utils.js` 583 -> 6,268 whole, envelope 9,241 ->
14,505 on the same 13,000 budget. The `memory-budget.ts` exception CG-14
documented is RESOLVED rather than re-justified: it ships whole again at
5,672 (27.3%) while `src/mcp/tools.ts` rises to 52.6% — so the answer
file wins the envelope AND no previously-unclipped file is clipped, which
is CG-12's own acceptance criterion finally holding.

Two hermetic fixtures added, one per lever, because nothing in the suite
had this shape — which is how it shipped. Both mutation-tested: removing
the buy arm reddens 3, removing the carry-forward reddens 2, and removing
the funding guard reddens 4 (including payroll's dropped
`payslip_builder.go`). Their `fixture shape` blocks are load-bearing: the
gates pass vacuously if a target ever drifts inside the grace bound, so
the window is asserted directly.

Full suite green (2,868 passed); both #1500 regression fixtures pass.
2026-08-04 02:13:46 -05:00
Colby McHenryandClaude Opus 5 1d9206d2d0 test(explore): lock down proportional byte allocation (CG-14, #1500)
Coverage for the CG-12 allocator, built around "would this go red if the
lever were removed" rather than line coverage — every way this regresses
is silent, ending in an agent falling back to Read.

Unit (`explore-proportional-allocation.test.ts`, 18 -> 38): calibration
pins, envelope safety across every tier and 30 candidate shapes, the
cliff boundary, spine weighting/trim survival, the diffuse control, and
the degenerate inputs — identical scores, a lone file, a runaway top
scorer, zero results, maxFiles 0, a non-finite score.

End-to-end (`explore-allocation-e2e.test.ts`, new): CG-6's second
regression fixture as a deterministic synthetic mirror — a large relevant
file, a small helper that used to win by shipping whole, and an
incidental `explore`/`BUDGET` collision — asserting per-file budget
share, not file presence. Plus degenerate result sets and a survey-style
diffuse control through the real render loop. The live self-query arm
stays in probe-allocation.mjs, where drift is a number to re-baseline
rather than a red suite.

Reverting the render loop to the pre-CG-12 rules reproduces #1500 on the
mirror exactly and takes 5 e2e + 2 payroll gates red:

  file                     score  pre-CG-12       CG-12
  src/mcp/allocator.ts      77.5  4,843 (39.7%)   9,335 (80.1%)
  src/util/budget-math.ts   36.0  6,079 (49.8%)   1,037 ( 8.9%)

Two defects the invariants surfaced, both fixed in tools.ts:
- rounded shares could sum past `pool`, so "reservations fit the
  envelope" was approximate rather than exact; both terms now floor
- a non-finite score made every share Infinity/Infinity, handing the
  render loop a NaN allowance; `weightOf` now fails safe to 0

Also adds a hard-ceiling gate to the payroll fixture — at 19.3K against
a 19.5K ceiling it is the only fixture that stresses the ~25K inline cap
— and exports EXPLORE_ALLOCATION so invariant tests read the constants
while one test pins the literals.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04 00:56:50 -05:00
Colby McHenryandClaude Opus 5 5f7f5f59df feat(mcp): score-proportional byte allocation for explore, with a relative cliff (CG-12, #1500)
The explore envelope used to follow FILE SIZE, not relevance. Every admitted
file was capped at the same flat `maxCharsPerFile`, while the whole-file rule
handed anything under `maxCharsPerFile * 3` its entire contents — a 3x swing
decided by how big a file happened to be:

  - self-query: `memory-budget.ts` (score 18) shipped whole and took 51.2% of
    the response; `src/mcp/tools.ts` (score 41, 4x the graph mass, 3x the term
    hits — it holds the allocator itself) was clipped at 3,800 and got 32.9%.
  - #1500 Go fixture: two generated CRUD files shipped whole at ~4.5K each AND
    consumed two of the tier's four file slots, so `BuildPayslip` — the
    hand-written "calculate" half of the question — ranked #6 and never
    rendered at all.

`allocateExploreBudget` now reserves each ranked file a share of the envelope
before anything renders, so the render loop spends a reservation instead of
racing for whatever the files above it left:

  - weight = score x worth x (spine ? 2 : 1), where `worth` is `rankPenalty`
    applied a SECOND time — ranking answers "is this file about the query",
    allocation answers "will these bytes teach the agent anything", and
    generated CRUD can legitimately rank while its bytes stay boilerplate;
  - a relative cliff at 15% of the top weight (capped at SCORE_FLOOR_MAX, so a
    god-file can't silence peers the score floor just admitted) gives a file
    ZERO source — path, symbols and line numbers only — and crucially frees its
    `maxFiles` slot for a file that earns its bytes;
  - every admitted file gets MIN_CHARS, then the remainder splits by weight:
    the floor keeps a diffuse survey question returning a spread, the remainder
    concentrates a precise one;
  - the flat per-file cap is retired as the primary guard, leaving a 70%-of-
    envelope safety valve.

Two changes were needed to make the reservation bite: an oversize cluster now
shrinks by whole MEMBER symbol ranges (a single-cluster god-file previously
took ~40% more than allotted, and the file below it was dropped for lack of
room), and the arrival-order budget stops are gone — they cut files by the
order they were reached rather than by merit.

Measured: payroll-go answer group 25.6% -> 78.7%, generated 57.4% -> 0%, and
`func (s *Service) BuildPayslip` now delivered; self-query `tools.ts` 18.5% ->
60.6%, past the epic's >50% bar. Controls hold: cobra/gin diffuse survey
queries keep their file spread (3->3, 3->4), express's middleware query is
byte-identical, and gin's flow query moves its top file from the thin `ginS`
singleton wrapper to `routergroup.go`.

One documented exception to "no previously-unclipped file becomes clipped":
`memory-budget.ts` was unclipped-whole at 5,672 and now clusters within its
3.1K reservation. That is the epic's own diagnosis of the bug — it scored 18
against 58 and was taking the larger slice purely for being small.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04 00:37:17 -05:00
Colby McHenryandClaude Opus 5 a3898cdc70 feat(mcp): relevance scoring overhaul for explore — kill incidental name-collision matches (CG-10, #1500)
Explore's per-file relevance awarded +50/+10/+3/+1 by match class and admitted
anything scoring >= 3. Neither half held up: the tier said HOW a symbol reached
us, never whether the match was evidence, and an absolute floor admits noise on
any repo where the top file scores 50+. Three scripts/agent-eval/*.mjs harnesses
took 63% of this repo's own "how does explore allocate its output budget" answer
on nothing but an unused `const explore` and a `const BUDGET`.

Four levers:

- KIND WEIGHT (RELEVANCE_KIND_WEIGHT): callables and types 1.0, members ~0.5,
  variable/constant/parameter 0.15-0.35. A weak-kind symbol with no usage edge
  anywhere in the graph (`contains` excluded — nesting is not usage) drops to
  0.08. Only weak kinds in the top two tiers pay for the DB probe; the subgraph's
  own edges answer most cases free. No measurable latency change (210 vs 211
  ms/call, n=12 interleaved).

- PERIPHERAL CAP: nodes >=2 hops from any match accumulate into a bucket capped
  at 5. Uncapped they added a flat +1 each, so a file grew more relevant by being
  bigger — parse-session.mjs reached 22 off one constant plus twelve unrelated
  symbols.

- RANK PENALTY: generated files x0.3, low-value x0.5, applied to the score AND
  the graph mass. Score alone would not have fixed #1500 — the generated CRUD
  carries MORE graph mass than the hand-written use-case, and graph mass outranks
  score in the comparator. Self-normalizing, never a hard exclusion.

- RELATIVE FLOOR: clamp(topScore * 0.2, 1, 10). Capped at one full-strength
  direct match so concentration elsewhere can never exclude one (without it a
  named-seed-heavy file pushed the floor to 21 and dropped a file the agent had
  named by class name). Backfills to 3 candidates when it would leave fewer, and
  drops the evidence requirement rather than return nothing at all.

excludeLowValueFiles was dead config — declared per tier, read nowhere; the
test/spec exclusion has been unconditional for a while. Removed. The real gap was
the detector: `isLowValue` anchored on a leading `/`, so a repo-ROOT `test/` dir
(express, cobra, most of npm and Go) never matched — express's routing question
spent 59% of its envelope on three test files. Anchored at `^` too, and the
filter now runs before the floor and judges "are there other candidates?" on the
whole gather.

Measured before/after on the same indexes (baseline bd86ad2):
- payroll-go fixture: generated 57.4% -> 23.5%; answer 25.6% -> 61.5%; cycle.go
  delivered 0 -> 38.9%. Generated ranks #3/#4, was #1/#2.
- self-query fixture: eval scripts 72% -> 0%; tools.ts ranks #1.
- express "route a request": 59% to test/* -> lib/application.js + lib/response.js
- cobra x3, codegraph "indexing pipeline": byte-identical (control)

Diagnostic gains a per-file penalty multiplier and NodeKind mix, so "why did this
file score X" is legible. Selection stages reordered to match the pipeline.

CG-6's gates flip from it.fails to live regressions except the byte-split ones,
which stay open for CG-12 (allocation still follows file size within the ranked
set).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-04 00:02:45 -05:00
Colby McHenryandClaude Opus 5 bd86ad2061 test(explore): #1500 regression fixtures for budget allocation (CG-6)
Two permanent fixtures pinning the failure mode from issue #1500 — explore
spending its byte envelope on files that merely name-collide with the query.
BOTH FAIL TODAY, by design: they document the bug and become the pass gate
for CG-10 (scoring) + CG-12 (proportional allocation).

__tests__/fixtures/payroll-go/ — a synthetic Go service mirroring the
reporter's shape: generated FKIT CRUD beside a hand-written payroll use-case,
entered from an HTTP route. Half the generated tree carries ORDINARY names
detectable only by their `// Code generated ... DO NOT EDIT.` header (the
#1500 case, and end-to-end cover for CG-5); `payrollpb/*.pb.go` covers the
path-detectable channel. BuildPayslip, Upsert and Store each exist twice,
generated and hand-written. cycle.go sits above the whole-file window so it
clips; the generated files sit below it so they ship whole.

Asking "how does payroll cycle create and calculate payslips?" — naming none
of the answering symbols — the generated CRUD delivers 57.4% of the envelope
against the hand-written layer's 25.6%, all of the latter domain types.
cycle.go is allocated the single largest slice (30.6%) and delivers ZERO: the
hard ceiling drops its whole section. runPayrollCycleAll, the hand-written
BuildPayslip and the real Upsert never reach the agent.

The second fixture is this repo, "how does explore allocate its output budget
across files", where scripts/agent-eval/*.mjs take 71.8% against tools.ts's
18.5% despite scoring 4.6x lower. It reads the live index, so its assertions
are relative rather than fixed percentages.

- scripts/agent-eval/probe-allocation.mjs — per-file budget-share probe,
  driving the CG-4 diagnostic through a JSONL sidecar so it measures the
  shipping allocator. Fixture entries are hermetic (copy + re-index per run,
  verified byte-identical across runs); exits 1 while any assertion fails.
- scripts/agent-eval/allocation-fixtures.json — both fixtures declared, with
  the 2026-08-03 baselines.
- __tests__/explore-allocation-1500.test.ts — fixture-shape assertions green
  today; the allocation assertions held as `it.fails` so the suite stays green
  while the bug is open and goes RED the moment it is fixed.

Also documented and deliberately left unfixed: runPayrollCycleAll's
`s.store.Upsert` edge resolves to the GENERATED Store.Upsert, not the
hand-written one — same-name method resolution across two packages picks the
wrong receiver. It is upstream of the allocation bug, so it belongs with
CG-10's scoring work.

Refs #1500

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-03 23:30:17 -05:00
Colby McHenryandClaude Opus 5 16e17495f4 feat(extraction): content-based generated-file detection (CG-5, #1500)
`isGeneratedFile` was path-only, but Go's own convention is a CONTENT
marker (`// Code generated by <tool>. DO NOT EDIT.`), not a filename one.
A Go monorepo with generated CRUD in ordinarily-named files sitting beside
hand-written use-cases was therefore invisible to every generated-file
down-rank in the codebase — that is #1500.

Measured on kubernetes/client-go (2,453 Go files): the canonical banner
appears in 2,001 of them, the path check flags 0, the new content check
flags exactly those 2,001 — no false positives, no misses.

Design: decide at INDEX time (content is already in memory for parsing),
persist on `files.generated`, read from the DB. Explore never reads file
headers per request.

- `hasGeneratedHeader(content)` recognizes the standard banners — Go's,
  protoc's, `@generated`, `<auto-generated>`, Thrift, OpenAPI Generator,
  FlatBuffers, bindgen, ANTLR. Precision-first and fenced three ways: an
  8KB/60-line header window, a comment-line requirement (leader or open
  block comment), and markers tight enough that prose can't trip them. A
  generator's own source, holding the banner as a string constant in its
  body, is not flagged; neither is this module itself (pinned by test).
- `isGeneratedFile(path)` is unchanged — cheap, sync, still the fallback.
- Schema v9 adds `files.generated` + a PARTIAL index. DDL only, no
  backfill: the flag derives from content the migration cannot see, so
  rows stay 0 until a re-index and every reader unions the flag with the
  path check — an un-migrated index keeps pre-#1500 behavior rather than
  regressing. Re-index required; noted in the CHANGELOG.
- `generatedPredicateFor(paths)` gives ranking a bounded probe + O(1)
  lookups. Bounded, not cached: no invalidation, so a ranking call can
  never serve a verdict the last sync already replaced. Wired into explore
  ranking, findSymbolMatches, findAllSymbols, search (MCP + CLI), the
  context formatter, and the dominant-file/route-file hygiene filters.

Cost (acceptance bar was no measurable index-time regression): a single
unanchored `/generat/i` test over the header rejects ~every hand-written
file before any line splitting. 4.6 µs/file on client-go (worst case —
82% generated). End-to-end `codegraph init` on client-go, n=3 alternating
arms: 5.73s median with detection vs 5.76s path-only baseline; the arms
cross over between runs, so the difference is inside run-to-run noise.

Scope note: generated status remains a stable TIEBREAK at equal score,
exactly where it was. Making it a strong negative signal is CG-10, which
this unblocks by making the signal correct and available.

Two pre-existing tests hard-coded schema version 8; both now track
CURRENT_SCHEMA_VERSION (or the migration table) so future migrations
don't require editing them.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-03 23:13:59 -05:00
Colby McHenryandClaude Opus 5 b37f191f5a feat(mcp): per-file allocation diagnostic for explore (CG-4)
How codegraph_explore divides its byte envelope among files was
unobservable — you could read a response and guess, but not say "this
file took 16% and that one took 20%." Nothing else in the budget-
allocation epic is measurable without that.

CODEGRAPH_EXPLORE_DEBUG now emits one report per explore call (stderr
table, stderr JSON, or a JSONL sidecar path). Per file: relevance score,
graph mass, term hits, ranking flags, render mode, bytes allocated vs
delivered, both shares, and whether it was clipped — plus why a ranked
candidate never rendered. Totals cover envelope vs maxOutputChars vs the
hard ceiling, the source/meta split, the selection funnel, and the score
floor and relevance-gate thresholds applied.

Allocated and delivered are reported separately on purpose: they diverge
exactly when the 25K ceiling truncates, and conflating them is how a
dropped trailing file goes unnoticed.

Off by default and byte-identical when off — it ships in the product
binary, and a diagnostic that perturbs the response by one byte would
invalidate every A/B taken with it on. ExploreDiagnostics.start() returns
null unless the env var is set, so every call site is a `diag?.` no-op.

Baseline recorded in docs/design/explore-budget-allocation.md: on this
repo, src/mcp/tools.ts gets 15.8% of the envelope while three weakly-
relevant agent-eval scripts take 61% between them — despite tools.ts
carrying 5.4x the score and 2.6x the graph mass of any of them. Small
files ship whole; the large answer file is clipped at maxCharsPerFile.
Rank ordering is correct and buys nothing. The loop also allocated 23,193
chars against an 18,000 budget.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-03 22:51:18 -05:00