Merge origin/master (plan line #590) into web-permission-sandbox-merge-master

Shared-surface conflicts resolve as unions: the fixture serves all five
projection keys (title/todos/permissions/plan/goal) with the /permission
and /plan command mirrors side by side, the connection specs assert the
five-key baseline and the shifted approval/question replay indices, and
the cli roster/deps, tsconfig aggregate, and README allowlist carry both
lines' rows. Plan-side content lands verbatim from master.

One end-state consolidation both branches half-did: with questions
(ui-question) and approvals (ApprovalPanel) each owning a composer
takeover, PendingCard retires outright — ChatView renders no pending
placeholder, the card component and its specs go, and both README halves
state the takeover-only contract.

packages/client/runtime/src/client/sessions/session.ts

@@ -218,12 +218,14 @@ export class Session implements SessionFace {
       this.notifier.markDirty()
       return result
     }
-    // Blank flips on ACCEPTANCE, not attempt: an accepted prompt has logged
-    // its user/message on the host (events.length > 0 is fact, not
-    // optimism), while a rejected first prompt must keep the session blank
-    // — the client-side blank mirror only ever lowers, so flipping early on
-    // a failure would surface the session forever and strip its
-    // connectWorkspace reuse eligibility against the host's authority.
+    // Blank flips on ACCEPTANCE, not attempt: an accepted prompt starts the
+    // conversation's first turn on the host (the host criterion — a logged
+    // turn/start — is fact, not optimism; standalone command and projection
+    // events never flip it), while a rejected first prompt must keep the
+    // session blank — the client-side blank mirror only ever lowers, so
+    // flipping early on a failure would surface the session forever and
+    // strip its connectWorkspace reuse eligibility against the host's
+    // authority.
     if (this.blankBit) {
       this.blankBit = false
       this.options.onEngaged?.(this)