2 Commits

Author	SHA1	Message	Date
bvandeusen	1fb883b72f	fix(write-path): give the semantic arm its own threshold + a payload floor ... Closes #2223. The write-path prior-art trigger's semantic arm shared auto-inject's 0.55 threshold, which was tuned on prose. Code embeddings sit on a much higher similarity floor — any two Python-shaped payloads share keywords, indentation and structure — so 0.55 landed INSIDE the noise band. Measured against the live instance: near-duplicate of a recorded helper 0.73-0.74 true positive unrelated colour math / Vue SFC / CSS 0.55-0.63 false positive `x = 1` 0.58 false positive 6 of 8 probe payloads produced a nudge; 4 were noise. The margin gate couldn't help — _AUTOINJECT_BAND is relative to the top hit, so with a single hit it never engages. Two gates are now the write-path arm's own: - kb_writepath_threshold, default 0.68 — above every measured false positive, still 0.05 below both true positives. Auto-inject keeps 0.55; it was tuned on prose and is not implicated. The comment this replaces explicitly reserved the split for when telemetry showed the surfaces wanted different values, so this is the change it described, not a reversal of it. - WRITEPATH_MIN_CODE_CHARS = 48 non-whitespace chars, below which the semantic arm doesn't run at all. Whitespace is excluded so a deeply indented one-liner can't pass on padding. 48 sits under the smallest plausible reusable helper (~60) and well over a degenerate edit, so it errs toward keeping recall — precision is the threshold's job. This is the cheap half of the operator's #89 idea; the full length<->threshold curve stays open there, since they asked to brainstorm it rather than have a scale invented for them. top_k stays shared — "how many titles at once" means the same thing on both surfaces. The existing tests were passing `code="x"` / `code="def f(): ..."` into the semantic arm, i.e. exactly the payloads the floor now drops, so the gate tests were never exercising a realistic payload. They now use a REAL_CODE fixture, plus new coverage for the floor (trivial payload, padding, place-arm unaffected, real helper passes) and a guard on the constant itself. Settings UI carries the new knob with the reasoning in its hint, and the write-path checkbox no longer claims it shares the threshold. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01UaYUaouG9jjhATyuxCKrQs	2026-07-29 23:26:59 -04:00
bvandeusen	e0328f2b1c	feat(plugin): write-path trigger — offer prior art before code is rewritten ... The milestone headline. Auto-inject fires on the operator's prompt; the moment reuse is actually lost is later, when the agent decides mid-task to write a helper. A PreToolUse hook on Write|Edit now fires there. Channel: `additionalContext` with NO permissionDecision, so the note reaches Claude beside the tool result and the write is never blocked — a recall aid must not be able to stop the operator's work. Plain stdout would have been invisible to the model, and deny/ask would have made a nudge into a gate. Two arms, different in kind: - BY PLACE — a snippet recorded at this path (or its directory) is prior art by definition, not resemblance, so it is neither scored nor thresholded. This is what #2083's reverse lookup was built to answer. - BY MEANING — semantic search restricted to snippets (new `note_type` filter on semantic_search_notes) over the code about to be written. Place ranks first; the top-k cap spans both arms. Gates carried over from milestone 93 verbatim: threshold, margin, session dedup, titles-never-bodies. Own `source='write_path'` in retrieval_logs so precision is tunable separately — the docstring records that the place arm is unlogged and hands that to #2085. Its own on/off in Settings but the SAME threshold/top-k: one "how loud may Scribe be" knob is easier to reason about than two that drift, and splitting them later is then a data-backed change rather than a guess. Details worth keeping: the hook sends a REPO-RELATIVE path because that is how locations are recorded; the git remote resolves to a project and is never used as the location `repo` filter (different namespaces, would silently match nothing); the endpoint stays a GET because a read-scoped API key cannot POST and every other hook depends on that. plugin.json 0.1.17 -> 0.1.18. Refs #2082, milestone #232.	2026-07-28 09:08:17 -04:00