fix(terminal): linear-time link-provider regex; always allow blob workers in CSP

cmdPattern's empty-matchable unbounded arg group backtracked exponentially
on wrapped heredoc/table lines — hovering one froze the tab for minutes.
Non-empty tokens + bounded reps make it O(n); regression test extracts the
shipped patterns and pins timing on the real killer shapes.

worker-src 'self' blob: is now unconditional so terminal-ui's _safeYield
tick worker (throttling escape) isn't CSP-blocked on non-gesture installs.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/web/middleware/auth.ts

@@ -205,7 +205,12 @@ export function registerSecurityHeaders(app: FastifyInstance, https: boolean): v
   const scriptSrc =
     "script-src 'self' 'unsafe-inline' https://cdn.jsdelivr.net" + (gesture ? " 'wasm-unsafe-eval'" : '');
   const connectSrc = "connect-src 'self' wss://api.deepgram.com";
-  const workerSrc = gesture ? "; worker-src 'self' blob:" : '';
+  // blob: workers are needed unconditionally: terminal-ui's _safeYield tick
+  // worker (throttling escape) is created from a Blob URL. Without this, every
+  // page load logs a CSP violation and the worker leg of _safeYield is dead.
+  // Risk is minimal — only same-origin scripts (already governed by script-src)
+  // can construct blob workers.
+  const workerSrc = "; worker-src 'self' blob:";
   const csp =
     `default-src 'self'; ${scriptSrc}; style-src 'self' 'unsafe-inline' https://cdn.jsdelivr.net; ` +
     `img-src 'self' data: blob:; ${connectSrc}; font-src 'self' https://cdn.jsdelivr.net; frame-ancestors 'self'${workerSrc}`;

src/web/public/ralph-wizard.js

@@ -378,7 +378,10 @@ Object.assign(CodemanApp.prototype, {
     prompt += `Output \`<promise>${config.completionPhrase}</promise>\` when done\n\n`;
 
     prompt += '## If Stuck\n';
-    prompt += 'Output `<promise>BLOCKED</promise>` with explanation';
+    prompt += 'Output `<promise>BLOCKED</promise>` with explanation\n\n';
+
+    prompt += '## Status Reporting\n';
+    prompt += '• End every response with a `RALPH_STATUS` block (parsed by Codeman)';
 
     // Show preview with highlighting (escape first, then apply formatting)
     const escapedPrompt = escapeHtml(prompt);

src/web/public/terminal-ui.js

@@ -839,7 +839,11 @@ Object.assign(CodemanApp.prototype, {
 
         // Pattern 1: Commands with file paths (tail -f, cat, head, grep pattern, etc.)
         // Handles: tail -f /path, grep pattern /path, cat -n /path
-        const cmdPattern = /(tail|cat|head|less|grep|watch|vim|nano)\s+(?:[^\s\/]*\s+)*(\/[^\s"'<>|;&\n\x00-\x1f]+)/g;
+        // ⚠ The arg group must stay linear-time: `(?:[^\s\/]*\s+)*` (empty-matchable
+        // token, unbounded) backtracks exponentially on lines with a trigger word
+        // followed by multi-space runs (e.g. wrapped heredoc/table output) — froze
+        // the whole tab on hover. Non-empty token + bounded reps is O(n).
+        const cmdPattern = /\b(tail|cat|head|less|grep|watch|vim|nano)\s+(?:[^\s\/]+\s+){0,4}(\/[^\s"'<>|;&\n\x00-\x1f]+)/g;
 
         // Pattern 2: Paths with common extensions
         const extPattern =

src/web/routes/ralph-routes.ts

@@ -16,6 +16,7 @@ import { SseEvent } from '../sse-events.js';
 import { autoConfigureRalph, CASES_DIR, SETTINGS_PATH, findSessionOrFail, parseBody } from '../route-helpers.js';
 import { writeHooksConfig, stripCaseEnvKeys } from '../../hooks-config.js';
 import { generateClaudeMd } from '../../templates/claude-md.js';
+import { buildRalphLoopPrompt } from '../../prompts/index.js';
 import { getLifecycleLog } from '../../session-lifecycle-log.js';
 import type { SessionPort, EventPort, RespawnPort, ConfigPort, InfraPort } from '../ports/index.js';
 import { MAX_CONCURRENT_SESSIONS } from '../../config/map-limits.js';
@@ -382,37 +383,12 @@ export function registerRalphRoutes(
       writeFileSync(fixPlanPath, planContent, 'utf-8');
     }
 
-    // Build full prompt
-    const hasPlan = enabledItems.length > 0;
-    let fullPrompt = taskDescription + '\n\n---\n\n';
-    if (hasPlan) {
-      fullPrompt += '## Task Plan\n\n';
-      fullPrompt += 'A task plan has been written to `@fix_plan.md`. Use this to track progress:\n';
-      fullPrompt += '- Reference the plan at the start of each iteration\n';
-      fullPrompt += '- Update task checkboxes as you complete items\n';
-      fullPrompt += '- Work through items in priority order (P0 > P1 > P2)\n\n';
-    }
-    fullPrompt += '## Iteration Protocol\n\n';
-    fullPrompt += 'This is an autonomous loop. Files from previous iterations persist. On each iteration:\n';
-    fullPrompt += '1. Check what work has already been done\n';
-    fullPrompt += '2. Make incremental progress toward completion\n';
-    fullPrompt += '3. Commit meaningful changes with descriptive messages\n\n';
-    fullPrompt += '## Verification\n\n';
-    fullPrompt += 'After each significant change:\n';
-    fullPrompt += '- Run tests to verify (npm test, pytest, etc.)\n';
-    fullPrompt += '- Check for type/lint errors if applicable\n';
-    fullPrompt += '- If tests fail, read the error, fix it, and retry\n\n';
-    fullPrompt += '## Completion Criteria\n\n';
-    fullPrompt += `Output \`<promise>${completionPhrase}</promise>\` when ALL of the following are true:\n`;
-    fullPrompt += '- All requirements from the task description are implemented\n';
-    fullPrompt += '- All tests pass\n';
-    fullPrompt += '- Changes are committed\n\n';
-    fullPrompt += '## If Stuck\n\n';
-    fullPrompt += 'If you encounter the same error for 3+ iterations:\n';
-    fullPrompt += "1. Document what you've tried\n";
-    fullPrompt += '2. Identify the specific blocker\n';
-    fullPrompt += '3. Try an alternative approach\n';
-    fullPrompt += '4. If truly blocked, output `<promise>BLOCKED</promise>` with an explanation\n';
+    // Build full prompt (includes the RALPH_STATUS contract)
+    const fullPrompt = buildRalphLoopPrompt({
+      taskDescription,
+      completionPhrase,
+      hasPlan: enabledItems.length > 0,
+    });
 
     // Write prompt to file
     const promptPath = join(casePath, '@ralph_prompt.md');