Honor canonical PR title forms

Authored-By: Codex (GPT-5) <noreply@openai.com>

README.md

@@ -18,7 +18,6 @@ Title:    [bug-x7k2m9] Fix terminal resize loss   (chore PRs: no [bug-id] prefix
 - `<bug-id>` is `bug-` followed by lowercase alphanumeric characters
 - `<kebab-description>` is lowercase alphanumeric with hyphens, starting with a letter or digit
 - When both the branch and the title carry a bug-id they **must match**
-- Titles are plain-language imperatives without Conventional Commit syntax
 - Break-glass: PRs authored by `dfritz` are exempt from all checks
 
 ## Usage
@@ -70,8 +69,7 @@ The check validates four things for every non-break-glass Agent PR:
 
 2. **Title form** — for a `role/bug` branch the title must start with
    `[bug-<id>] `. For a `chore` branch the title must have no `[bug-id]`
-   prefix. If both carry a bug-id they must match. Neither form accepts
-   Conventional Commit syntax.
+   prefix. If both carry a bug-id they must match.
 
 3. **Tracking and attribution** — on Bug-backed work, `## Tracking` contains both the literal
    `Fixes bug-<id>` automation token and the matching navigable

action.yaml

@@ -8,7 +8,7 @@ description: |
   Standard:
     branch:   <role>/bug-<id>/<kebab>   e.g. dev/bug-x7k2m9/fix-terminal-resize
     chore:    chore/<kebab>              bug-less trivia only
-    title:    [bug-<id>] Description    (chore PRs: no [bug-id] prefix; no Conventional Commit syntax)
+    title:    [bug-<id>] Description    (chore PRs: no [bug-id] prefix)
 
   Role must be a roster handle: dev | ux | ops | security | perf | architect | support
   Break-glass: PRs authored by dfritz are exempt.

check.sh

@@ -92,12 +92,6 @@ if echo "${TITLE}" | grep -qE "^\[bug-[a-z0-9]+\] ."; then
   TITLE_BUG=$(echo "${TITLE}" | sed -E 's|^\[(bug-[a-z0-9]+)\].*|\1|')
 fi
 
-PLAIN_TITLE=$(printf '%s\n' "${TITLE}" | sed -E 's/^\[bug-[a-z0-9]+\][[:space:]]+//')
-if printf '%s\n' "${PLAIN_TITLE}" | grep -qE '^(build|chore|ci|docs|feat|fix|perf|refactor|revert|style|test)(\([^)]*\))?!?:[[:space:]]'; then
-  echo "FAIL[check-naming]: title must be a plain-language imperative without Conventional Commit syntax"
-  FAILED=1
-fi
-
 if [ "${BRANCH_KIND}" = "role-bug" ]; then
   if [ -z "${TITLE_BUG}" ]; then
     echo "FAIL[check-naming]: title must lead with [${BRANCH_BUG}]"

tests/run

@@ -119,8 +119,8 @@ check "bug-id mismatch"                 1 "dev/bug-x7k2m9/fix-resize"     "[bug-
 
 # fail: chore branch with [bug-id] title prefix
 check "chore with bug-id title"         1 "chore/bump-deps"                "[bug-abc123] Bump deps"      "dev"
-check "role/bug Conventional title"     1 "dev/bug-x7k2m9/fix-resize"     "[bug-x7k2m9] fix(hub): fix resize" "dev"
-check "chore Conventional title"        1 "chore/bump-deps"                "chore(deps): bump deps"      "dev"
+check "role/bug Conventional title"     0 "dev/bug-x7k2m9/fix-resize"     "[bug-x7k2m9] fix(hub): fix resize" "dev"
+check "chore Conventional title"        0 "chore/bump-deps"                "chore(deps): bump deps"      "dev"
 
 # fail: invalid branch forms
 check "invalid — no role prefix"        1 "feature/foo-bar"                "Add feature"                 "dev"