fix(#4600): explicit --converge overrides the convergence feature gate (#4771)

* test(#4600): pin explicit-flag-overrides-gate precedence

* fix(#4600): explicit --converge overrides the convergence feature gate

PLAN_STRATEGY=converge is set only by an explicit --converge/--cross-ai,
so gating it on workflow.plan_review_convergence made an explicit
operator flag lose to a config default and stop the run with a
question-shaped success. The config remains the default for non-flag
invocation; the flag now wins, and the step says so instead of
gate-and-exit.

* test(#4600): pin the precedence contract sentences as written

* fix(#4600): keep the precedence sentence on one line

The pinned contract phrase wrapped across a line break, so the
writer-contract assertion could not match it.

* fix(#4600): document the flag-overrides-gate precedence on user surfaces

commands/gsd/autonomous.md and docs/COMMANDS.md still said --converge
requires workflow.plan_review_convergence=true; both now state the
override. Changeset typed Changed with the docs update alongside.

* docs(#4600): backfill changeset PR number

* fix(#4600): restore the convergence gate mention in user surfaces

* test(#4600): pin the dispatched convergence run against the config gate

* fix(#4600): override the convergence gate on the dispatched run

Emitted-Drift-Ack-Growth: autonomous.md — #4600: the converge dispatch appends --override-gate inside the PLAN_STRATEGY conditional, and the precedence sentences replace the stale fail-fast instruction
Emitted-Drift-Ack-Growth: plan-review-convergence.md — #4600: config gate 1.5 honors an explicit --override-gate dispatch (token-anchored) while the standalone veto and config-get default are preserved

---------

Co-authored-by: sim <sim@local>

docs/CONFIGURATION.md

@@ -526,7 +526,7 @@ All workflow toggles follow the **absent = enabled** pattern. If a key is missin
 | `workflow.plan_bounce_script` | string | (none) | Path to the external script invoked for plan bounce validation. Receives the PLAN.md path as its first argument. Required when `plan_bounce` is `true`. Added in v1.36 |
 | `workflow.plan_bounce_passes` | number | `2` | Number of sequential bounce passes to run. Each pass feeds the previous pass's output back into the validator. Higher values increase rigor at the cost of latency. Added in v1.36 |
 | `workflow.post_planning_gaps` | boolean | `true` | Unified post-planning gap report (#2493). After all plans are generated and committed, scans REQUIREMENTS.md and CONTEXT.md `<decisions>` against every PLAN.md in the phase directory, then prints one `Source \| Item \| Status` table. Word-boundary matching (REQ-1 vs REQ-10) and natural sort (REQ-02 before REQ-10). Non-blocking — informational report only. Set to `false` to skip Step 13e of plan-phase. |
-| `workflow.plan_review_convergence` | boolean | `false` | Enable the `/gsd-plan-review-convergence` command. Disabled by default — the command exits with an enable instruction when this key is `false`. The command automates the manual plan→review→replan loop: it spawns configured reviewers (Codex, Claude, Antigravity, OpenCode, Ollama, LM Studio, llama.cpp), counts unresolved HIGH concerns and actionable MEDIUM/LOW findings via the CYCLE_SUMMARY contract, replans with `--reviews` feedback, and repeats until converged or max cycles reached. Enable with `gsd config-set workflow.plan_review_convergence true`. Added in v1.39 |
+| `workflow.plan_review_convergence` | boolean | `false` | Enable the `/gsd-plan-review-convergence` command. Disabled by default — the command exits with an enable instruction when this key is `false`. The command automates the manual plan→review→replan loop: it spawns configured reviewers (Codex, Claude, Antigravity, OpenCode, Ollama, LM Studio, llama.cpp), counts unresolved HIGH concerns and actionable MEDIUM/LOW findings via the CYCLE_SUMMARY contract, replans with `--reviews` feedback, and repeats until converged or max cycles reached. Enable with `gsd config-set workflow.plan_review_convergence true`. A `/gsd-autonomous --converge` dispatch overrides this gate for its own run (#4600); standalone invocation stays gated. Added in v1.39 |
 | `workflow.plan_chunked` | boolean | `false` | Enable chunked planning mode. When `true` (or when `--chunked` flag is passed to `/gsd-plan-phase`), the orchestrator splits the single long-lived planner Task into a short outline Task followed by N short per-plan Tasks (~3-5 min each). Each plan is committed individually for crash resilience. If a Task hangs and the terminal is force-killed, rerunning with `--chunked` resumes from the last completed plan. Particularly useful on Windows where long-lived Tasks may hang on stdio. See [`planning.chunked_parallel`](#planning-settings) to dispatch the per-plan Tasks concurrently instead of one at a time. Added in v1.38 |
 | `workflow.code_review_command` | string | (none) | Shell command for external code review integration in `/gsd-ship`. Receives changed file paths via stdin. Non-zero exit blocks the ship workflow. Added in v1.36 |
 | `workflow.tdd_mode` | boolean | `false` | Enable TDD pipeline as a first-class execution mode. When `true`, the planner aggressively applies `type: tdd` to eligible tasks (business logic, APIs, validations, algorithms) and the executor enforces RED/GREEN/REFACTOR gate sequence. An end-of-phase collaborative review checkpoint verifies gate compliance. Added in v1.36 |