fix(cli-registry): merge-time fixes for the run-menu consolidation (#458)

- test/opencode-resize.test.ts: retarget the launcher guard at the real code (this.selectSession(firstSessionId), any this.activeSessionId assignment) with an anti-vacuity check; the old strings existed nowhere, so it could never fail
- session-ui.js: restore as comments the two invariants the merged bodies lost (deepseek leaves statusReporting unset, i.e. ON; no effort field for external CLIs, it is Claude-specific)
- docs/cli-registry.md: move the frontend-guard paragraph below the two backend-guard paragraphs so they keep their antecedent, and note the widened comparison shape
- test/frontend-cli-no-id-branching.test.ts: the comparison shape accepts any left-hand identifier (const m = this._runMode; m === 'codex' was invisible), normalized to `mode`; the two `m !== 'shell'` display filters are allowlisted and the remaining blind spots documented
- test/run-mode-dispatch.test.ts: table-driven pin of run() dispatch (claude to runClaude, each RUN_MODE_LAUNCH id to _runCliMode(id), shell to runShell, unknown to runClaude, lock held and released)
- CLAUDE.md: name the second CI-gated guard next to the backend one
- server.ts: every </head> injection passes a replacer function; a clis.json label containing $' re-injected the rest of the document past escapeScriptJson (two render tests pin it, proven failing on the string form)
- _isAltCliMode(): no reference anywhere in the tree, nothing to fix

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
(cherry picked from commit 1ea363ff808a62861559bc141e724b163cc1c56e)

docs/cli-registry.md

@@ -98,12 +98,12 @@ DeepSeek is worth reading before assuming an entry looks like its siblings — t
 
 `test/cli-registry-no-id-branching.test.ts` fails the build if a CLI id comparison appears outside the stock catalog. It builds its id list from the live catalog, blanks comment lines before scanning (comments legitimately quote the pattern to explain why a branch was removed, and blanking rather than dropping is what keeps reported line numbers pointing at the real file), and keeps an allowlist in which **every entry carries its reason**.
 
-`test/frontend-cli-no-id-branching.test.ts` is the same guard for the two frontend files the CLI registry's Run-menu consolidation touches, `session-ui.js` and `mobile-overview.js` — deliberately not the rest of `src/web/public/`, whose per-CLI rules stay out of scope for now (see "Fields declared for later" below). Its allowlist keys on `<file>::<expression>` with no line number, since a single unrelated edit to a contended file would otherwise shift every subsequent line and make every entry go stale at once, and each entry additionally carries the exact number of approved call sites — a bare key would let a brand-new branch reusing an already-approved expression land unreviewed.
-
 It matches four shapes, not one: `mode === '<id>'`, `mode !== '<id>'`, `case '<id>':`, and `['<id>', …].includes(mode)`. The first version matched `===` only, and that gap was not academic — the refactor it guards converted the `===` sites and left the negated ones, so 36 `!==` branches survived it, including a seven-mode chain auto-enabling Ralph under a comment asking the next person to keep it in step with a predicate by hand while the sibling code path already read the capability. A guard that sees half the shapes reports a count measured over the half it happens to catch.
 
 The allowlist is not a formality. If a branch is about what a CLI can DO it belongs in `CliCapabilities`; the entries that remain are things that are not CLI-behaviour branches at all — chiefly the legacy per-mode `<Mode>Config` objects on `POST /api/sessions`, which are a fact about the public HTTP API rather than about any CLI, plus a few documented cases where `mode === 'claude'` is genuinely the right question (Read My Mind reads Claude's _own_ transcript, so a capability there would be actively wrong).
 
+`test/frontend-cli-no-id-branching.test.ts` is the same guard for the two frontend files the CLI registry's Run-menu consolidation touches, `session-ui.js` and `mobile-overview.js` — deliberately not the rest of `src/web/public/`, whose per-CLI rules stay out of scope for now (see "Fields declared for later" below). Its allowlist keys on `<file>::<expression>` with no line number, since a single unrelated edit to a contended file would otherwise shift every subsequent line and make every entry go stale at once, and each entry additionally carries the exact number of approved call sites — a bare key would let a brand-new branch reusing an already-approved expression land unreviewed. Its comparison shape differs from the backend guard's in one respect: the left-hand side may be any identifier, not only one named `mode`, `id` or `agentType`, because the review of #458 found `const m = this._runMode; if (m === 'codex')` slipping past the named form while the scanned file already filters with `(m) => m !== 'shell'`.
+
 ## Two namespaces called `param`
 
 `launch.params` keys, `env.configSetenv[].fromParam` and `capabilities.privilegedParams[].param` all name a **launch param**. The **legacy wire field** a param arrives as is a separate namespace, and `launch.legacyConfigAliases` is the only bridge between the two.