fix(pm): stop H5 title-login extraction at the login token

[os-warren]

Fixes#9926

h5SeatStickerDesync took the WHOLE remainder of the status string after the
🟢 emoji as the seat holder. Every active seat title carries a trailing
(session_...) parenthetical by protocol, so a perfectly consistent seat
post like 🟢 os-warren (session_...) with assignee os-warren never
matched the extracted "holder" string and got flagged on every sweep.

Fix

Extraction now stops at the first whitespace-delimited token after the
emoji (scripts/pm/check-half-states.mjs:350-361 in the new diff). The
(session_...) parenthetical and any middot (·)-separated title suffix
(in-flight counts, queue depth, a body-edit timestamp) are display, not
identity, and are no longer compared against the assignee list. The
🟢 Routine exemption is untouched. No other predicate, and neither
renderer (plain / markdown), was touched.

Self-test (new cases)

• Both shapes named in the card: 🟢 os-x (session_...) matching assignee
  os-x -> clean; same shape with no assignee -> finding.
• Reverse verification against the exact six titles pinned by the anchor
  sweep ([Half-state patrol] check-half-states live sweep — generated view (please pin) #9857, run 32229942288), predicted direction first:
  • #7623 (os-warren, consistent) -> clean
  • #6017 (os-elon, consistent) -> clean
  • #6026 (os-zhuang, consistent) -> clean
  • #9831 (os-warren, consistent) -> clean
  • #6367 (no assignee, ·-suffixed title) -> finding (unchanged)
  • #6024 (no assignee, bare session_... with no login before it) ->
    finding (unchanged)

All six land in the predicted direction — the four measured false
positives clear, the two true positives still fire.

Gates run (head 46d0b95ee)

node scripts/pm/dispatch-gates.mjs (no paths, real diff) named:

• pnpm check:pm-half-states -> check-half-states self-test: 202 cases pass.
• pnpm check:partof-closing-keyword -> check-partof-closing-keyword self-test: 28 cases pass.
• pnpm check:cross-package-test-inputs -> All 33 self-test cases passed. /
  OK: 12 package(s) read outside themselves, all declared, and turbo.json hashes every declared glob.

Also run given the diff touches scripts/**: pnpm check:nul-bytes ->
check-nul-bytes: OK (scanned 6305 text file(s) ... no raw ASCII control bytes).

Not a governed path — draft opened for PM review; PM flips it to ready.

No changeset: scripts/pm/** is internal PM tooling, not a published
package (consistent with every prior PR touching this file, none of which
added one).

Generated by Claude Code

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Generated by Claude Code