feat: ClawTap v0.1.0 — initial release

Multi-adapter mobile UI for AI coding assistants.
Supports Claude Code, Codex CLI, and Gemini CLI through one interface.

Features:
- Real-time bidirectional sync via tmux + WebSocket
- Cross-AI review (send one AI's output to another for review)
- Multi-review tabs with minimize/expand
- Push notifications (PWA) with smart session-aware filtering
- Three-channel event system (hooks, file watcher, pane monitor)
- Voice input, image paste, draft persistence
- Terminal-native design (JetBrains Mono, dark theme, pixel art claw)
- CLI with --adapter flag on every command
- Zero-overhead fire-and-forget hooks

server/adapters/codex/message-utils.ts

@@ -0,0 +1,62 @@
+/** A content block within a Codex message */
+export interface CodexContentBlock {
+  type: 'input_text' | 'output_text' | 'input_image' | string;
+  text?: string;
+  image?: { url: string };
+  [key: string]: unknown;
+}
+
+/** Standard normalized content block (matches claw-tap frontend format) */
+export interface NormalizedBlock {
+  type: string;
+  text?: string;
+  [key: string]: unknown;
+}
+
+const SYSTEM_PATTERNS: RegExp[] = [
+  /<permissions instructions>/i,
+  /<environment_context>/i,
+  /AGENTS\.md/,
+];
+
+/**
+ * Convert a Codex content block to the standard format used by claw-tap.
+ *
+ * - `input_text`  → `{ type: 'text', text }`
+ * - `output_text` → `{ type: 'text', text }`
+ * - Unknown types are passed through as-is.
+ */
+export function normalizeContentBlock(block: CodexContentBlock): NormalizedBlock {
+  if (block.type === 'input_text' || block.type === 'output_text') {
+    return { type: 'text', text: block.text };
+  }
+  return { ...block } as NormalizedBlock;
+}
+
+/**
+ * Extract readable text from an array of Codex content blocks.
+ * Concatenates all text-bearing blocks (input_text / output_text) with newlines.
+ */
+export function extractText(content: CodexContentBlock[]): string {
+  return content
+    .filter((b) => b.type === 'input_text' || b.type === 'output_text')
+    .map((b) => b.text ?? '')
+    .join('\n');
+}
+
+/**
+ * Return true if this message should be filtered out as a system message.
+ *
+ * Matches:
+ * - `role === 'developer'`
+ * - Text containing `<permissions instructions>`, `<environment_context>`, or `AGENTS.md`
+ */
+export function isSystemMessage(role: string, content: CodexContentBlock[]): boolean {
+  if (role === 'developer') return true;
+
+  const text = extractText(content);
+  for (const pattern of SYSTEM_PATTERNS) {
+    if (pattern.test(text)) return true;
+  }
+  return false;
+}