fix(gate): read reviewer_select/confirm choice from the choices[] array

The frontend's reviewer widgets uniformly send the picked option in a `choices`
array (SelectWidget/ArtifactGateWidget: `choices: [optionId]`), but the gate's
reviewer_select and reviewer_confirm(reject) handlers read `resp.choice`
(singular). Result: every single-select gate saw an undefined choice, answered
"Nessuna scelta ricevuta", and re-presented forever — the workflow could never
pass F1. (reviewer_decide/multiselect already read `resp.choices`, so it worked.)

Add a shared selectedChoice(resp) helper reading choices[0] (falling back to the
legacy singular choice); both handlers use it.

TDD: gate/__tests__/gate_choice.test.js RED->GREEN; full gate suite 28/28.
Verified LIVE (Playwright -> real Pi -> GLM 5.2): a single-select F1 answer is
now accepted and the workflow advances (clarification 2/4 -> 3/4). The same run
also live-verified the F1 hang fix (418187a).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

PROJECT_STATE.md

@@ -78,7 +78,27 @@ Opens frontend at http://localhost:5173 → backend :8787.
 - Global user rules (`~/.claude/CLAUDE.md`): think before coding, simplicity first, surgical
   changes, goal-driven verification.
 
-## Most recent work — F1 reviewer-widget hang fix + multiselect guidance (committed 2026-06-30; authored 2026-06-29)
+## Live verification + reviewer_select fix (2026-06-30, afternoon)
+
+Drove the real stack (Playwright → backend → real Pi → GLM 5.2 → DWH) end-to-end.
+
+- **F1 hang fix (`418187a`) VERIFIED LIVE.** Answered an F1 reviewer widget; Pi resumed (model
+  socket reopened) and the gate produced new output — vs the old silent hang. The transition
+  "silent hang → gate re-presents/advances" proves `ctx.ui.input` now resolves.
+- **New bug found + fixed: reviewer_select `choices` vs `choice`.** The gate's `reviewer_select`
+  (and `reviewer_confirm` reject) read `resp.choice` (singular) but the frontend uniformly sends
+  `choices: [id]` (array) — so every single-select gate answered "Nessuna scelta ricevuta" and
+  re-proposed forever (multiselect was fine; it already read `choices`). Fix: a shared
+  `selectedChoice(resp)` helper (`harness/.pi/extensions/tht-gate.js`) reading the array; both
+  handlers use it. TDD: `gate/__tests__/gate_choice.test.js` RED→GREEN, full gate suite **28/28**.
+  VERIFIED LIVE: a single-select answer is now accepted and the workflow advances (2/4 → 3/4).
+- **Resume cold-start STALL confirmed (open item #1).** On `/riprendi-sessione`, GLM 5.2 narrates
+  the bootstrap step then ends the turn without the tool call → Pi idle, unrecoverable from the UI.
+  Memory: `thothii-resume-cold-start-stall.md`.
+- **GLM 5.2 F1 is slow (~3-4 min, ~50+ reads) but works** — looks stuck but isn't; don't hit
+  "Stop and save" (it `POST /close`s → kills Pi). Memory: `thothii-glm52-f1-slow-not-stuck.md`.
+
+## Earlier work — F1 reviewer-widget hang fix + multiselect guidance (committed 2026-06-30; authored 2026-06-29)
 
 Two fixes, **committed to `main`** (7 files):
 
@@ -108,9 +128,9 @@ Two fixes, **committed to `main`** (7 files):
    `reviewer_select`. Guidance-only — no new widget (`frontend MultiselectWidget` already
    exists).
 
-Verified this session: backend `npx vitest run` **67/67 green**; `tsc --noEmit -p .` **OK**;
-fake-pi contract `node --test test_fake_pi_contract.mjs` **2/2 green**. Harness pytest and
-frontend NOT re-run (untouched by these changes). **NOT verified live** — see open item 4.
+Verified at commit time: backend `npx vitest run` **67/67 green**; `tsc --noEmit -p .` **OK**;
+fake-pi contract `node --test test_fake_pi_contract.mjs` **2/2 green**. **Verified LIVE
+2026-06-30** (see the top "Live verification" section).
 
 ## Most recent feature — Session management (MERGED to main @ 2c21e46)
 Full session management modeled on Claude's UI, all three layers:
@@ -127,30 +147,29 @@ Full session management modeled on Claude's UI, all three layers:
   `docs/superpowers/plans/2026-06-29-session-management.md`.
 
 ### ⚠️ Open items / pending gates
-1. **Resume cold-start e2e (MANUAL, not yet run).** The resume chain is structurally
-   complete but unproven live: drive a session to F4, stop it, resume in a fresh process,
-   confirm it re-enters at F4 (not a new-question kickoff). **Do not advertise the "Resume"
-   button as working until this passes.**
+1. **Resume cold-start STALLS (root cause confirmed 2026-06-30) — NOT fixed.** On
+   `/riprendi-sessione` GLM 5.2 narrates the bootstrap step ("esamino la sessione…") then ends
+   the turn without the tool call → Pi idle, unrecoverable from the UI (steer doesn't revive an
+   ended turn). The new-question path works, so it's resume-specific. Fix direction: harden the
+   resume kickoff/SKILL so the model chains into the tool call. Memory:
+   `thothii-resume-cold-start-stall.md`. **Do not advertise "Resume" as working until fixed.**
 2. **Full Playwright live-stack verification (MANUAL, not yet run).**
 3. **Minor backlog (non-blocking):** explicit id-traversal guard in `delete_session`
    (today gated by `load_session`); `close_session` could reuse `_save_touched` (DRY);
    delete-via-kebab integration test skipped (base-ui Menu portal not drivable in jsdom —
    the dialog itself is unit-tested); a couple of test-file lint nits.
-4. **Live-verify the F1 reviewer-widget hang fix (committed 2026-06-30).** The fix is committed
-   and proven against Pi's source + a now-faithful fake, but the browser round-trip is still
-   unproven. With VPN up: start the stack, drive an F1 session past the first answer, confirm
-   the widget unblocks and the model continues. (On 2026-06-29 DWH REST was unreachable with
-   VPN off, so the live e2e couldn't run; Ollama was reachable and `pi` present.)
-5. **Model caveat (likely "struggles to finish the task" symptom).** Settings use
-   `deepseek-v4-flash` (thinking high) but the harness is tuned for GLM 5.2, and F1 needs
-   many autonomous tool calls; even with the hang fixed a "flash" model may not complete F1.
-   Separate config decision — try GLM 5.2 when validating live.
+4. **DONE — F1 hang fix live-verified 2026-06-30** (see top section). The live verification
+   also surfaced + fixed the reviewer_select `choices` mismatch.
+5. **Resolved: settings use `zai/glm-5.2`/medium** (not deepseek-flash); GLM 5.2 drives F1
+   fine, just slowly (~3-4 min, ~50+ reads). To tell a truly stalled Pi from a merely-slow one,
+   check its sockets/children. Memory: `thothii-glm52-f1-slow-not-stuck.md`.
 
 ## Where design history lives
 - Specs: `docs/superpowers/specs/` · Plans: `docs/superpowers/plans/`
 - SDD execution ledger (gitignored scratch): `.superpowers/sdd/progress.md`
 - Auto-memory index: `~/.claude/projects/-Users-mp-projects-ThothII/memory/MEMORY.md`
-  (notes on the Pi RPC event vocabulary and the Omics Portal/GSD design system).
+  (Pi RPC event vocabulary, ui.input id correlation, Omics Portal/GSD design system,
+  resume cold-start stall, GLM 5.2 F1 slow≠stuck).
 
 ## Git
 `main` tracks `origin` (github.com/mptyl/ThothII). The F1 hang-fix (7 files + this