code-discovery

Code Discovery

Discovery — finding the code relevant to a task before changing it — is the largest easily-wasted token cost in a session. When Graphify is available, query the pre-built code graph and Read only the cited source_locations instead of grepping the tree. Graphify is optional and pre-1.0: every step below is guarded and falls back to plain Glob/Grep/Read — discovery never hard-blocks on it.

The protocol

1. Detect + health-check. command -v graphify; graph exists at graphify-out/graph.json; graph fresh (built_at_commit in graph.json == git rev-parse HEAD, or graphify check-update . is clean). Binary absent → step 5; never prompt to install (SessionStart tool-check already surfaces it).
2. Build/refresh when missing or stale — pure local AST, no API key, seconds: graphify extract . --code-only (missing) or graphify update . (stale). Mention it in interactive commands; just do it in dispatched agents. Build fails → step 5, no retry loop. Never run a semantic (non---code-only) build for discovery.
3. Load lessons once, if present. Read graphify-out/reflections/LESSONS.md before the first query (bounded ≈1500 tokens); prefer its listed nodes, skip its dead ends. Lessons are hints, not ground truth. Absent → skip silently. You only consume lessons — the orchestrating command records outcomes at a verified gate, so surface which graph nodes you relied on.
4. Query-first. Answer structural questions by traversal, most-specific verb first:

   graphify query "where is auth wired to the database?" --budget 1500
   graphify explain "RateLimiter"          # one symbol and its connections
   graphify path "UserService" "DatabasePool"
   graphify affected "processRefund" --depth 2   # reverse blast radius — leads, not verdicts
   

   Then Read only the cited source_locations. Noisy answer → raise --budget or rephrase before abandoning the graph. Verify every cited caller by reading it — never claim "all callers handled" from graph output alone, least of all from a stale graph. A verb that errors or emits unparseable output → treat the graph as unavailable for that question and fall back (probe new verbs with graphify <verb> --help).
5. Fallback (absent / stale / failed / empty): Glob candidates, Grep symbols, Read immediate dependencies. Graceful degradation, not an error — say nothing alarming.
6. Keep the graph out of version control (repo-local exclude, no tracked-file diff):

   grep -qxF 'graphify-out/' .git/info/exclude 2>/dev/null || echo 'graphify-out/' >> .git/info/exclude