fix(bin): restore prototype's deleted anti-patterns and two routing triggers

ADR-0020's stated anti-goal is satisfying the size gate by deleting content rather
than relocating it. prototype's logic.md lost three anti-patterns, including
"Don't generalise" — the one with a distinct failure mode, a throwaway growing
abstractions for hypothetical futures, and the one the logic branch is most exposed
to. It survived nowhere in the repo.

The deletion bought nothing measurable: references/ sits outside the body FAIL,
outside the 600-word suggestion and outside the Vale gate, and prototype's body is
483 words. 4011d14 restored the byte-identical defect in the sibling ui.md with
exactly that reasoning in its message and left this file alone. Restored verbatim
from main.

improve-codebase-architecture had dropped "refactoring" from its description
entirely, so "find refactoring opportunities in this repo" had no lexical match,
while spending characters on a boundary against tdd — which cannot plausibly steal
an architecture request. retrofit.md names that exact failure: an invented boundary
costs characters and buys no routing accuracy.

write-docs had dropped all four literal trigger phrasings, leaving them only in the
body and a `when:` field, neither visible to the router at routing time. Its
boundary also sent PRDs to grill-with-docs, which has no PRD flow, and the body
repeated that at two more places. Per #123 nothing in the corpus produces a PRD, so
no target was invented — the boundary is now honest about the ADR case only.

Two READMEs added by this branch contradicted the SKILL.md they document: triage's
label resolution, and grill-with-docs' fifth during-session behaviour. Unconditional
reference pointers in tdd and improve-codebase-architecture are now conditional; the
files stay at the skill root, which is #122's scope.

Refs: #114, #122, #123
ADR: 0020

plugins/bin/skills/triage/README.md

@@ -12,7 +12,7 @@ A run does one of three things depending on what the maintainer asks for:
 - **Triage a specific issue** — gather context (including prior triage notes, so resolved questions are not re-asked, and `.out-of-scope/` records that resemble the issue), recommend a category and state with reasoning, attempt reproduction for bugs *before* any grilling, run a `grill-with-docs` session if the issue needs fleshing out, then apply the outcome.
 - **Quick state override** — "move #42 to ready-for-agent" is trusted and applied directly, skipping grilling, after confirming the exact changes.
 
-Two hard rules: every comment or issue the skill posts during triage must open with the AI-generated disclaimer, and the canonical role names above are *not* necessarily the label strings in the tracker — the mapping has to be supplied to the run.
+Two hard rules: every comment or issue the skill posts during triage must open with the AI-generated disclaimer, and the canonical role names above are *not* necessarily the label strings in the tracker — each is resolved against the tracker's live label set before it is applied, and a name with no counterpart there is reported to the maintainer as a gap rather than guessed at.
 
 ## Composition