fix(cli-registry): guard workDetect.workingLine like every other config regex

#385 made the composer glyph and the working status line per-CLI registry
data, which is right, but `workingLine` arrived as a config-supplied regex
validated with a bare `new RegExp()`. That skips `compileVersionRegex()`,
the helper the registry uses for exactly this: a `~/.codeman/clis.json`
override can set the field, the compiled pattern is run against every
accumulated PTY chunk and every pane capture, and a nested quantifier there
backtracks on the event loop for the whole server rather than one session.

Route it through the helper in both places, which are not redundant: the
schema refine rejects the entry at LOAD time so a bad pattern never reaches
a session, and `_workingLinePattern()` compiles through the same helper so
the runtime cannot hold a pattern the schema would have refused. The helper
returns null instead of throwing, so the Claude-pattern fallback stops being
a try/catch and becomes structural. Both shipped patterns compile unchanged,
and Claude's is behaviourally identical to CLAUDE_WORKING_LINE_PATTERN.

Also match the Codex footer case-insensitively on the E. It was
characterised against codex-cli 0.152.1, which prints a lowercase `esc`;
a version capitalising it would make the whole fix silently inert, since
the pane would simply never look like it was working.

Docs: CLAUDE.md, architecture-invariants and cli-registry.md all still
stated the Claude-mode-only rule this PR retires, and none of them named
the new capability or the regex guard.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

src/config/cli-registry/schema.ts

@@ -13,7 +13,7 @@
  */
 
 import { z } from 'zod';
-import { TOKEN_PATTERNS } from './patterns.js';
+import { compileVersionRegex, TOKEN_PATTERNS } from './patterns.js';
 import { isKnownLauncherProfile, isKnownSetenvProfile } from './profiles.js';
 
 /** A bare CLI id: lowercase, starts with a letter, at most 24 chars. Also used as a CSS/URL token. */
@@ -277,20 +277,17 @@ const capabilitiesSchema = z
     workDetect: z
       .object({
         promptGlyph: z.string().min(1).max(8),
-        // Compiled per session, so a broken pattern must fail at LOAD time rather than
-        // throw inside the PTY data handler.
+        // Config-supplied regex, so it goes through the same guard as `version.regex`:
+        // ~/.codeman/clis.json can set this, and the compiled pattern runs on the PTY
+        // hot path, where a nested quantifier would be a ReDoS against the event loop.
+        // A broken pattern must also fail at LOAD time rather than inside a data handler.
         workingLine: z
           .string()
           .min(1)
-          .max(400)
-          .refine((src) => {
-            try {
-              new RegExp(src);
-              return true;
-            } catch {
-              return false;
-            }
-          }, 'workingLine must be a valid regular expression'),
+          .refine(
+            (src) => compileVersionRegex(src) !== null,
+            'workingLine must be a regex compileVersionRegex() accepts: at most 200 characters, no nested quantifiers'
+          ),
       })
       .strict()
       .optional(),

src/config/cli-registry/stock.ts

@@ -429,7 +429,7 @@ const CODEX: CliEntry = {
     // `Working (2m 49s • esc to interrupt)` above it while a turn runs. It animates no
     // braille spinner, and it never prints `esc to interrupt` at rest, so that phrase
     // alone separates a running turn from an idle one.
-    workDetect: { promptGlyph: '›', workingLine: 'esc to interrupt' },
+    workDetect: { promptGlyph: '›', workingLine: '[Ee]sc to interrupt' },
     transcript: 'codex-rollout',
     altScreen: 'strip-full',
     echo: { policy: 'predict', anchor: { kind: 'cursor' }, predictProfile: 'codex' },

src/session.ts

@@ -106,6 +106,7 @@ import {
 import { DEFAULT_TMUX_HISTORY_LIMIT } from './config/terminal-history.js';
 import { EXEC_TIMEOUT_MS } from './config/exec-timeout.js';
 import { getCli } from './config/cli-registry/registry.js';
+import { compileVersionRegex } from './config/cli-registry/patterns.js';
 import { resolveSessionCliVersion } from './utils/cli-resolver.js';
 import {
   buildInteractiveArgs,
@@ -2469,13 +2470,11 @@ export class Session extends EventEmitter {
   private _workingLinePattern(): RegExp {
     if (this._workingLineRe === undefined) {
       const src = getCli(this.mode)?.capabilities.workDetect?.workingLine;
-      // The schema validates `workingLine` at load time, so a throw here would mean a
-      // registry that never loaded. Falling back beats taking the session down.
-      try {
-        this._workingLineRe = src ? new RegExp(src) : CLAUDE_WORKING_LINE_PATTERN;
-      } catch {
-        this._workingLineRe = CLAUDE_WORKING_LINE_PATTERN;
-      }
+      // Same guard the schema applies, not a second opinion: `compileVersionRegex()` is
+      // what keeps a nested quantifier out of this pattern, and this one runs on the PTY
+      // hot path. It returns null rather than throwing, and Claude's pattern is the
+      // fallback every session used before the registry carried one.
+      this._workingLineRe = (src ? compileVersionRegex(src) : null) ?? CLAUDE_WORKING_LINE_PATTERN;
     }
     return this._workingLineRe;
   }