48 lines
2.6 KiB
Markdown
48 lines
2.6 KiB
Markdown
## Code Graph First (mandatory)
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Before any cross-file understanding or change, query the code graph first. Do
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NOT grep + read whole files to reconstruct relationships.
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- **Session start**: run `codegraph_status` to confirm the graph is built; if
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empty, run `codegraph init -i` from the project root once. The graph persists
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and is reused for the whole session.
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- **Trust but verify stats**: `codegraph_status` can return a stale or partial
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snapshot. If counts look low, run `codegraph_status` again — codegraph
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auto-syncs on file changes (2s debounce via native OS file watcher).
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Do not run structural queries against a graph you suspect is incomplete.
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- **Structural questions** ("who calls / what depends on / where defined / what
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breaks if I change this") MUST use `codegraph_explore` (primary, for flows and
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surveys), `codegraph_search` (locate symbols), `codegraph_callers` (every call
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site).
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Do not piece relationships together from grep + read output.
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- **Reading an implementation**: use `read(filePath, symbol: "<name>")` to fetch
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only the target symbol's line range. Do not read an entire large file to see
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one function.
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- **grep is the fallback, not the default**: use grep only for fuzzy text the
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graph cannot answer (comments, string literals, config text). Use
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`codegraph_node` with `symbolsOnly: true` for a cheap structural overview instead of Glob.
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- **Delegate exploration**: prefer running graph + read inside an Explorer
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subagent and returning only `file:line` results and conclusions, to keep the
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main context lean.
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## Per-worktree indexes (mandatory for worktree sessions)
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The main checkout's `.codegraph/` indexes ONLY that tree. A git worktree lives
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outside the repo path, so nearest-`.codegraph/` resolution finds nothing under
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it — graph queries in a workflow worktree silently degrade to grep+read
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(the [org-internal #2561] / TD-006 gap).
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- `script/session-worktree.sh create` and `script/scratch-worktree.sh create`
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build a per-worktree index automatically: `codegraph init -i <path>` runs in
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the background (best-effort — missing CLI, existing index, or init failure
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never blocks worktree creation). Set `CODEGRAPH_SKIP=1` to disable
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(selftests / CI).
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- Worktrees created BEFORE this hook landed have no index: run
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`codegraph init -i` once from inside them.
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- First query after creating a worktree may hit a still-building index; if
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results look empty, check `codegraph status` inside the worktree, then retry.
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- Kickoff readiness (`checkCodegraph`) checks `<root>/.codegraph/codegraph.db`
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per root, and `codegraph serve --mcp` resolves from the session's cwd — both
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pick the worktree's own index once it exists.
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