fix(index): exclude Android resource XML from the index by default (#1047) (#1054)

An Android `res/` tree (layouts, value bags, drawables, menus, navigation
graphs) holds only non-code resources that yield zero symbols, yet on an
Android app it dominates the file count (one report: 26k XML = 97% of
files, 0 symbols) — bloating the DB, slowing indexing, and padding
explore/search results and file counts with entries that have nothing to
find.

Default-ignore the Android resource type directories (`res/layout/`,
`res/values/`, `res/drawable/`, … and their `-<qualifier>` variants) at
discovery, via DEFAULT_IGNORE_PATTERNS so it applies uniformly to the git
index, the non-git walk, and change detection. The `res/<type>/`
structure is self-identifying, so non-Android projects are untouched, and
the only XML that carries symbols — MyBatis mappers under
`src/main/resources/` — never lives under `res/`, so nothing useful is
dropped. `res/raw/` is deliberately kept (arbitrary bundled assets), and
a `.gitignore` negation re-includes anything.

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -20,6 +20,7 @@ and adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 - `codegraph node` can now read a file from the command line. File-read mode — pass `-f`/`--file` to get a file's source with line numbers plus the files that depend on it, the same output as the `codegraph_node` MCP tool — was rejected with "missing required argument 'name'", because the command always demanded a symbol name even though file mode has none, leaving the feature unreachable from the CLI. The symbol name is now optional: `codegraph node -f src/auth.ts` (or `codegraph node src/auth.ts`) reads the file, `codegraph node parseToken` looks up a symbol, and running it with neither prints a short usage hint instead of a cryptic error. Thanks @jcrabapple for the report. (#1044)
 - `codegraph query` no longer prints meaningless relevance percentages like "12042%" next to each result. The number was a raw full-text search score — useful only for ordering the results, not as a real 0–100% figure — so multiplying it by 100 produced wild values that made the output look broken. Results are already listed best-match first, so the CLI now just shows them in that order with no score, matching what the search tool reports to AI agents. If you script against `codegraph query --json`, the raw `score` is still included for sorting or thresholding. Thanks @jcrabapple for the report. (#1045)
 - `codegraph explore` no longer reports an alarming, inflated result count on broad natural-language queries. The "Found N symbols across M files" summary used to count every symbol the search swept in while ranking, so a broad query (for example "publish status to the API") on a large project could announce hundreds of symbols across a big fraction of the codebase — reading as if you had to wade through all of them — even though only the most relevant handful are actually shown with their source. The summary now counts just the files explore returns source for, so the number matches what you see. Ranking and results are unchanged: the right symbols still come first, and any further relevant files are still listed by name under "Not shown above" so nothing is hidden. Thanks @jcrabapple for the report. (#1046)
+- Android resource files no longer bloat the index. A `res/` tree — layouts, drawables, value bags (strings, colors, styles), menus, navigation graphs — contains no code symbols, but on an Android app it can be the overwhelming majority of files (one project: 26,000+ XML files, ~97% of everything, contributing zero symbols), which inflated the database, slowed indexing, and padded file counts and `codegraph explore`/search results with entries that have nothing to find. CodeGraph now skips Android resource directories by default — `res/layout/`, `res/values/`, `res/drawable/`, `res/menu/`, and the rest, including their locale/density/version variants like `res/values-es/` or `res/drawable-hdpi/`. Your actual code is untouched, and so is the one kind of XML that does carry symbols — MyBatis mapper files, which live under `src/main/resources/`, not `res/`. `res/raw/` is deliberately kept (it can hold real assets), and you can re-include any excluded directory with a `.gitignore` negation such as `!res/values/`. Thanks @jcrabapple for the report. (#1047)
 
 
 ## [1.1.2] - 2026-06-28