feat(capture): write AGENTS.md alongside CLAUDE.md + skill refinements from regression tests

Capture pipeline:
- agentPromptGenerator now writes AGENTS.md + CLAUDE.md (drop legacy
  .cursorrules), matching the dual-file convention already used by the
  _shared templates in hyperframes init. AGENTS.md is picked up natively by
  Cursor, Codex, Gemini CLI, Windsurf, Aider, and Jules; CLAUDE.md covers
  Claude Code. Both files share the same content — a capture data inventory
  that points agents to the website-to-hyperframes skill.

website-to-hyperframes skill refinements (derived from 8-site regression test):
- Drop slash-command phrasing throughout SKILL.md and step-6-build.md so the
  skill works identically across Claude Code (slash), Cursor (auto-discover
  by description), and other agents.
- Remove stale HANDOFF.md references from SKILL.md step-7 summary and
  reference table — matches the intent of the prior step-7 cleanup.
- step-5-vo: specify narration.txt filename convention (pronunciation-
  substituted spoken text; distinct from SCRIPT.md the creative doc).
- step-6 self-review adds three rules derived from actual lint warnings
  observed across the 8 regression runs:
    - Every <template> root needs data-start + data-duration (catches
      root_composition_missing_data_start/duration, seen in 4/8 runs).
    - Caption exits need a hard tl.set kill after tl.to(opacity:0), or
      per-word karaoke tweens can leave captions stuck on screen
      (caption_exit_missing_hard_kill).
    - No duplicate media nodes with identical src + start + duration, or
      the compiler discovers them twice (duplicate_media_discovery_risk).

Housekeeping:
- .gitignore: add cursor-tests/, basecamp-video/, projects/, videos/ —
  local regression-test scratch dirs that should never be committed.
- Remove two broken symlinks from .claude/skills/ that pointed to paths
  which never existed in the repo (.claude/skills/ is already gitignored).

Made-with: Cursor

packages/cli/src/capture/agentPromptGenerator.ts

@@ -1,9 +1,13 @@
 /**
- * Generate CLAUDE.md (and .cursorrules) for captured website projects.
+ * Generate AGENTS.md and CLAUDE.md for captured website projects.
+ *
+ * Writes the same content to both filenames so any AI agent auto-discovers it:
+ *   - AGENTS.md  — universal convention (Cursor, Codex, Gemini CLI, Windsurf, Aider, Jules)
+ *   - CLAUDE.md  — Claude Code convention
  *
  * This file generates a DATA INVENTORY that tells the AI agent what files
  * exist and what they contain. The actual workflow lives in the
- * /website-to-hyperframes skill — this file points agents there.
+ * website-to-hyperframes skill — this file points agents there.
  */
 
 import { writeFileSync } from "node:fs";
@@ -32,8 +36,8 @@ export function generateAgentPrompt(
     hasShaders,
     detectedLibraries,
   );
+  writeFileSync(join(outputDir, "AGENTS.md"), prompt, "utf-8");
   writeFileSync(join(outputDir, "CLAUDE.md"), prompt, "utf-8");
-  writeFileSync(join(outputDir, ".cursorrules"), prompt, "utf-8");
 }
 
 function buildPrompt(
@@ -104,7 +108,7 @@ function buildPrompt(
 
 Source: ${url}
 
-To create a video from this capture, use the \`/website-to-hyperframes\` skill.
+To create a video from this capture, use the \`website-to-hyperframes\` skill.
 
 ## What's in This Capture
 

packages/cli/src/capture/scaffolding.ts

@@ -2,7 +2,7 @@
  * Project scaffolding helpers for the website capture pipeline.
  *
  * Handles .env file loading and HyperFrames project scaffold generation
- * (index.html, meta.json, CLAUDE.md).
+ * (index.html, meta.json, AGENTS.md, CLAUDE.md).
  */
 
 import { existsSync, writeFileSync, readFileSync } from "node:fs";
@@ -44,10 +44,10 @@ export function loadEnvFile(startDir: string): void {
 }
 
 /**
- * Generate the project scaffold files: index.html, meta.json, and CLAUDE.md.
+ * Generate the project scaffold files: index.html, meta.json, AGENTS.md, CLAUDE.md.
  *
  * Only creates files that don't already exist (index.html, meta.json).
- * Always generates CLAUDE.md via agentPromptGenerator.
+ * Always (re)generates AGENTS.md + CLAUDE.md via agentPromptGenerator.
  */
 export async function generateProjectScaffold(
   outputDir: string,
@@ -78,7 +78,7 @@ export async function generateProjectScaffold(
     );
   }
 
-  // Generate CLAUDE.md + .cursorrules (AI agent instructions — always, regardless of API keys)
+  // Generate AGENTS.md + CLAUDE.md (AI agent instructions — always, regardless of API keys)
   try {
     const { generateAgentPrompt } = await import("./agentPromptGenerator.js");
     generateAgentPrompt(
@@ -92,8 +92,8 @@ export async function generateProjectScaffold(
       catalogedAssets,
       detectedLibraries,
     );
-    progress("agent", "CLAUDE.md generated");
+    progress("agent", "AGENTS.md + CLAUDE.md generated");
   } catch (err) {
-    warnings.push(`CLAUDE.md generation failed: ${err}`);
+    warnings.push(`AGENTS.md/CLAUDE.md generation failed: ${err}`);
   }
 }