Files
codebase-memory-mcp/src/watcher
Martin Vogelandbethzyy 1af49dfe58 fix(watcher): stop nested non-git dirs and monorepo siblings retriggering
Three related defects in how the watcher decides what counts as a change.

1. `git rev-parse --git-dir` walks UP the tree, so an ordinary folder that
   merely sits under an unrelated repository answered yes. The watcher then
   inherited that ancestor's dirty state -- permanently non-empty and about
   entirely different files -- and reindexed on every poll forever. A
   directory is now git-managed only if it carries its own .git (directory
   or gitlink file) or the ancestor actually tracks something inside it, so
   a real monorepo sub-package still qualifies while a scratch or ignored
   folder does not.

2. `git status` reports the whole repository regardless of -C, so every
   package in a monorepo reindexed whenever any sibling was edited. The
   status call is now scoped with a `-- .` pathspec.

3. Porcelain paths are REPOSITORY-relative but were stat'ed against
   root_path. For a project watched at the repository root the two coincide
   and the bug is invisible; for a subdirectory project every stat missed,
   silently degrading the dirty signature to text-only and losing the
   size/mtime component that makes an edit to an already-dirty file
   detectable. Paths now resolve through `rev-parse --show-cdup`.
   --show-cdup rather than --show-toplevel because MSYS/Cygwin git returns a
   translated absolute path from the latter that will not join onto the
   native path we hold; a relative hop composes on every platform.

Distilled from #1001 by bethzyy, whose diagnosis identified all three.
Main independently fixed that PR's two headline problems (the unbounded
non-git file count, and per-poll churn via a dirty-state signature) while
it waited, and the watcher was rewritten onto a supervised argv-spawn
harness in between, so this is a reimplementation against the new code
rather than a rebase of theirs.

Both new tests are verified binding: reverting the classification guard
reddens the nested-directory test, and removing the pathspec reddens the
monorepo one, each without disturbing the other.

Addresses the remaining parts of #713, #841 and #937.

Co-authored-by: bethzyy <bethzyy@users.noreply.github.com>
Signed-off-by: Martin Vogel <martin.vogel.tech@gmail.com>
2026-08-20 16:43:38 +02:00
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