fix(#1296): align config docs/prompts/schema with consumers (#1299)

* fix(#1296): align config docs/prompts/schema with consumers

The user-facing config surface disagreed with what the consumers actually do
(subset of the #1216 audit). No runtime consumption behavior changes.

- workflow.subagent_timeout: settings-advanced.md prompt + docs/CONFIGURATION.md
  said "seconds (default 600)" but the consumer (map-codebase.md) uses
  milliseconds (default 300000). Relabeled all four spots in settings-advanced.md
  (prompt, parse-default list, example, confirmation table) + the CONFIGURATION.md
  row.
- review.models.<cli>: settings-integrations.md, docs/CONFIGURATION.md (Integration
  Settings), and docs/CLI-TOOLS.md documented a shell command, but review.md injects
  the value into a --model/-m flag. Relabeled to a bare model id and reconciled the
  contradictory CONFIGURATION.md sections.
- workflow.test_command + workflow.build_command: consumed via config-get
  (test_command in verify-phase/execute-phase/audit-fix/post-merge-gate;
  build_command in post-merge-gate) and documented, but absent from validKeys so
  `config set` rejected them. Registered both in config-schema.manifest.json and
  documented them in references/planning-config.md (overview + complete reference).

Regression tests: behavioral config-set tests (tests/config.test.cjs) + doc-parity
content guards (tests/config-field-docs.test.cjs).

Deferred to other #1216 clusters: security-gate wiring, search_gitignored wiring,
mvp_mode, source_grounding_authority labeling, and config-set enum enforcement.

Closes #1296
Refs #1216

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

* chore(changeset): Fixed fragment for #1296 config-surface alignment

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

---------

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

docs/CLI-TOOLS.md

@@ -549,12 +549,12 @@ User-facing entry point: `/gsd-graphify` (see [Command Reference](COMMANDS.md#gs
 
 ## Reviewer CLI Routing
 
-`review.models.<cli>` maps a reviewer flavor to a shell command invoked by the code-review workflow. Set via [`/gsd-config --integrations`](COMMANDS.md#gsd-config) or directly:
+`review.models.<cli>` maps a reviewer flavor to a bare model id injected into the CLI's `--model` (or `-m`) flag by the code-review workflow. Set via [`/gsd-config --integrations`](COMMANDS.md#gsd-config) or directly:
 
 ```bash
-node gsd-tools.cjs config-set review.models.codex    "codex exec --model gpt-5"
-node gsd-tools.cjs config-set review.models.gemini   "gemini -m gemini-2.5-pro"
-node gsd-tools.cjs config-set review.models.opencode "opencode run --model claude-sonnet-4"
+node gsd-tools.cjs config-set review.models.codex    "gpt-5"
+node gsd-tools.cjs config-set review.models.gemini   "gemini-2.5-pro"
+node gsd-tools.cjs config-set review.models.opencode "claude-sonnet-4"
 node gsd-tools.cjs config-set review.models.claude   ""   # clear — fall back to session model
 ```