feat(installer): multi-target — Claude Code, Cursor, Codex CLI, opencode (#162)

* feat(installer): multi-target — Claude Code, Cursor, Codex CLI, opencode

Closes the Claude-locked installer behind issue #137. The runtime MCP
server was already agent-agnostic (stdio); only the installer was
locked. After this refactor, `codegraph install` can write per-agent
MCP config + instructions for any combination of supported agents.

## What ships

Four agent targets, each implementing the new `AgentTarget` interface:

- **Claude Code** — `~/.claude.json`, `~/.claude/settings.json`,
  `~/.claude/CLAUDE.md` (or local equivalents). Behavior preserved
  from the original installer; existing installs upgrade in place.
- **Cursor** — `~/.cursor/mcp.json` (g) or `./.cursor/mcp.json` (l)
  + project-local `./.cursor/rules/codegraph.mdc`.
- **Codex CLI** — `~/.codex/config.toml` with `[mcp_servers.codegraph]`
  + `~/.codex/AGENTS.md`. Global only. Hand-rolled TOML serializer
  scoped to the table we own — siblings + array-of-tables preserved.
- **opencode** — `~/.config/opencode/opencode.json` (XDG) or
  `./opencode.json`.

Adding a 5th agent is a new file in `src/installer/targets/` plus
one entry in `registry.ts`.

## CLI changes

```
codegraph install                                   # interactive multi-select
codegraph install --yes                             # auto-detect, install global
codegraph install --target=cursor,claude --yes     # explicit list
codegraph install --target=auto --location=local   # detected, project-local
codegraph install --target=none                    # skip agent writes entirely
codegraph install --print-config codex             # dump snippet, no writes
```

## Backwards compat

Every export from the old `config-writer.ts` (`writeMcpConfig`,
`writePermissions`, `writeClaudeMd`, `hasMcpConfig`, `hasPermissions`,
`hasClaudeMdSection`) is preserved as a `@deprecated` shim that
delegates to per-file helpers in `targets/claude.ts`. Existing Claude
users see byte-identical on-disk layout — `detect()` reports
`alreadyConfigured: true`, re-running is a no-op.

## Tests

+47 new tests in `__tests__/installer-targets.test.ts`:
- Parameterized contract test across all 4 targets × supported
  locations (install → unchanged on re-run, sibling preservation,
  uninstall reverses install, printConfig writes nothing).
- Codex partial-state recovery, locked-block contract for the
  codegraph table, full TOML serializer suite.
- Registry: getTarget, resolveTargetFlag (auto/all/none/csv).

`__tests__/installer.test.ts` relaxed one assertion: the new code
returns `unchanged` for byte-identical re-runs instead of `updated`;
the surrounding-custom-content contract is unchanged.

## Uninstall behavior change

`bin/uninstall.ts` now loops `ALL_TARGETS.uninstall('global')` on
`npm uninstall -g`. A user who manually configured
`~/.codex/config.toml` with our block will have only that block
removed on package uninstall — we only touch the dotted-key table
we own.

Based on andreinknv/codegraph@c5165e4. Issue #137.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* chore(scripts): add local-install.sh for hands-on branch testing

Builds the current branch and `npm link`s it as the global
`codegraph` binary. `--undo` unlinks and reinstalls the published
version. Mirrors the style of scripts/release.sh.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* feat(installer): move agent picker to the first prompt

Reorders runInstallerWithOptions so the multi-select for agents
(Claude / Cursor / Codex / opencode) is step 1 — before the
global-npm-install confirm and before the location prompt. Bare
`npx @colbymchenry/codegraph` now opens with "Which agents should
CodeGraph configure?", which is the answer most users want first.

Side effects of the reorder:

- Early exit if zero targets selected — skips global-install and
  location prompts entirely, exits with "nothing to do."
- Multiselect labels drop the per-location "will skip" hint (location
  isn't known yet) and replace it with a static "global only" badge
  for targets like Codex that have no project-local config concept.
- If every selected target is global-only, the location prompt is
  skipped and global is forced (no point asking).
- Detection probes the user-provided location if known via flag,
  else 'global' as the most common default — labels are a hint
  about what's installed locally, not load-bearing.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(installer): disambiguate "global" wording in install prompts

Two prompts both said "global" but meant different things — users
read them as duplicates. Renamed for clarity:

- Step 2 (npm install -g): "Install codegraph globally?" →
  "Install the codegraph CLI on your PATH? (Required so agents can
  launch the MCP server)". Spinner messages match.
- Step 3 (config location): "Where would you like to install?" with
  "Global"/"Local" → "Apply agent configs to all your projects, or
  just this one?" with "All projects" (~/.claude, ~/.cursor, etc.)
  / "Just this project" (./.claude, ./.cursor, etc.).
- All-global-only fallback: "Using global install" → "Writing
  user-wide configs (selected agents have no project-local config)."

Underlying `Location` values ('global' / 'local') unchanged; only
the UI strings shift, so no test or flag breakage.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(installer/cursor): inject --path so workspace-aware queries work

Cursor launches MCP-server subprocesses with cwd != workspace root,
AND does not pass rootUri or workspaceFolders in the MCP initialize
call. The codegraph MCP server's process.cwd() fallback misses the
workspace's .codegraph/ and reports "not initialized" on every tool
call. Codex and Claude don't have this issue (Codex launches with
cwd=workspace, Claude passes rootUri).

Fix: inject `--path` into the args we write for Cursor.

- local install (./.cursor/mcp.json): hardcode the absolute project
  path — known at install time.
- global install (~/.cursor/mcp.json): use `${workspaceFolder}` so
  Cursor expands it per-workspace. One global config now drives
  every project the user opens, without per-project re-install.

No test breakage — the parameterized contract tests check
idempotency / sibling preservation, not the exact args content.
File-header comment documents the rationale so the next person
doesn't strip the arg as boilerplate.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* feat(init): auto-wire project-local agent surfaces

Closes the global-Cursor UX gap: `~/.cursor/mcp.json` registers the
MCP server, but Cursor's agent only learns to *prefer* codegraph
over native grep when it sees `.cursor/rules/codegraph.mdc` — a
project-local file that global install can't write. Previously the
user had to re-run `codegraph install --target=cursor --location=local`
for every new project. Now `codegraph init` does it automatically.

## What changed

- New optional `AgentTarget.wireProjectSurfaces()` returning a
  WriteResult of project-local files to drop. Most targets omit
  it (their global config is complete). Cursor implements it to
  write the rules file.
- New `wireProjectSurfacesForGlobalAgents()` orchestrator in
  installer/index.ts — iterates ALL_TARGETS, detects which are
  configured globally, calls their wireProjectSurfaces, returns
  what was written.
- `codegraph init` calls the orchestrator in both branches:
  - Fresh init: write surfaces after CodeGraph.init succeeds.
  - Already-initialized re-init: write surfaces too, so re-running
    `init` is the documented recovery path for a project missing
    its rules file.

## Steady-state UX

  1. Once, ever: `codegraph install` (writes global agent configs)
  2. Per project: `codegraph init -i` (builds the index + auto-wires
     project-local agent surfaces — currently Cursor's rules file)

No new tests — wireProjectSurfaces delegates to writeRulesEntry,
which is already covered by the parameterized contract tests.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* feat(installer): agent-agnostic instructions template

The old template was inherited from the Claude-only era and
prescribed "ALWAYS spawn an Explore agent" — a Claude Code-specific
concept (subagents via the Task tool). When Cursor's agent read
this it had no Explore agent to spawn, got confused, and fell back
to native grep/read even for structural queries the codegraph MCP
tools answer in one call.

This rewrite:

- Frames each tool by the question it answers (search vs callers
  vs impact vs context vs explore vs node vs files vs status).
- Tells the agent explicitly to TRUST codegraph results and not
  re-verify them with grep — the over-grep-after-codegraph
  behavior was the main symptom we saw on Cursor.
- Reframes "spawn Explore agent" as an OPTIONAL pattern for
  harnesses that support parallel subagents — Claude Code still
  gets the hint, Cursor / Codex / opencode just skip it.
- Trims the "if not initialized" section to one prescriptive line.

Same marker delimiters (`<!-- CODEGRAPH_START/END -->`) so existing
installs upgrade in place via the marker-based section swap. No
test changes needed — the parameterized contract tests check
marker placement + sibling preservation, not the literal body.

Effective surfaces: ~/.claude/CLAUDE.md (Claude), .cursor/rules/
codegraph.mdc (Cursor, project-local), ~/.codex/AGENTS.md (Codex).
Users get the new copy by re-running `codegraph install` for
global writes, or `codegraph init` for Cursor's project rules.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* docs(readme): reflect multi-agent support at the top + accurate flow

- Tagline now reads "Supercharge Claude Code, Cursor & Codex" instead
  of Claude-only — multi-agent support is what the PR is about, the
  README should say so above the fold.
- New badge row (Claude Code / Cursor / Codex CLI / opencode) in the
  same shields.io style as the OS row.
- Install-flow bullets reordered to match the actual prompt order
  (agent picker first, then PATH install, then location).
- `codegraph init -i` step now mentions that init wires up
  project-local agent surfaces (Cursor rules file etc.) so global
  install works in every project without a re-run.
- Agent-agnostic phrasing in the closing line ("your agent" not
  "Claude Code").

Headline-level brand decision left intentionally in this PR — the
existing Claude-only positioning predates multi-agent support.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: andreinknv <andrei.nknv@outlook.com>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Colby Mchenry
2026-05-17 19:26:09 -05:00
committed by GitHub
co-authored by Claude Opus 4.7 andreinknv
parent 7e617d819b
commit a447e1d430
19 changed files with 2265 additions and 532 deletions
+62
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/**
* Agent-instructions template — the markdown body each agent target
* writes into its conventional instructions file (CLAUDE.md /
* AGENTS.md / codegraph.mdc / etc.).
*
* The body content is identical across agents because the codegraph
* usage advice is agent-agnostic — only the destination filename and
* any optional frontmatter (Cursor `.mdc`) varies per target.
*
* The legacy `claude-md-template.ts` re-exports these names for
* backwards compatibility with downstream importers.
*/
/** Markers used by the marker-based section replacement. */
export const CODEGRAPH_SECTION_START = '<!-- CODEGRAPH_START -->';
export const CODEGRAPH_SECTION_END = '<!-- CODEGRAPH_END -->';
/**
* The full marker-delimited block written into each agent's
* instructions file. Includes the start/end markers so the section
* can be detected and replaced on re-install.
*/
export const INSTRUCTIONS_TEMPLATE = `${CODEGRAPH_SECTION_START}
## CodeGraph
This project has a CodeGraph MCP server (\`codegraph_*\` tools) configured. CodeGraph is a tree-sitter-parsed knowledge graph of every symbol, edge, and file. Reads are sub-millisecond and return structural information grep cannot.
### When to prefer codegraph over native search
Use codegraph for **structural** questions — what calls what, what would break, where is X defined, what is X's signature. Use native grep/read only for **literal text** queries (string contents, comments, log messages) or after you already have a specific file open.
| Question | Tool |
|---|---|
| "Where is X defined?" / "Find symbol named X" | \`codegraph_search\` |
| "What calls function Y?" | \`codegraph_callers\` |
| "What does Y call?" | \`codegraph_callees\` |
| "What would break if I changed Z?" | \`codegraph_impact\` |
| "Show me Y's signature / source / docstring" | \`codegraph_node\` |
| "Give me focused context for a task/area" | \`codegraph_context\` |
| "Survey an unfamiliar module/topic" | \`codegraph_explore\` |
| "What files exist under path/" | \`codegraph_files\` |
| "Is the index healthy?" | \`codegraph_status\` |
### Rules of thumb
- **Trust codegraph results.** They come from a full AST parse. Do NOT re-verify them with grep — that's slower, less accurate, and wastes context.
- **Don't grep first** when looking up a symbol by name. \`codegraph_search\` is faster and returns kind + location + signature in one call.
- **Don't chain \`codegraph_search\` + \`codegraph_node\`** when you just want context — \`codegraph_context\` is one call.
- **\`codegraph_explore\` is the heavy hitter** for unfamiliar areas — it returns full source from all relevant files in one call, but is token-heavy. If your harness supports parallel subagents (e.g., Claude Code's Task tool), spawn one for explore-class questions to keep main session context clean.
- **Index lag**: the file watcher debounces ~500ms behind writes; don't re-query immediately after editing a file in the same turn.
### If \`.codegraph/\` doesn't exist
The MCP server returns "not initialized." Ask the user: *"I notice this project doesn't have CodeGraph initialized. Want me to run \`codegraph init -i\` to build the index?"*
${CODEGRAPH_SECTION_END}`;
/**
* Backwards-compat alias. Existing downstream code may import
* `CLAUDE_MD_TEMPLATE` from this module via the re-export shim in
* `claude-md-template.ts`.
*/
export const CLAUDE_MD_TEMPLATE = INSTRUCTIONS_TEMPLATE;