refactor(skills): consolidate 15 skills into 3 (#211)

* refactor(skills): consolidate 15 skills into 3 for better trigger reliability

Merge 9 GSAP skills (core, timeline, scrolltrigger, plugins, utils, react,
frameworks, performance, effects) and 6 HyperFrames skills (compose, captions,
tts, audio-reactive, marker-highlight, cli) into 3 consolidated skills:

- `gsap` — core API + timelines + performance in SKILL.md; scrolltrigger,
  plugins, utils, react, frameworks, effects in references/
- `hyperframes` — composition authoring rules in SKILL.md; captions, tts,
  audio-reactive, marker-highlight in references/
- `hyperframes-cli` — CLI commands (init, lint, preview, render, etc.)

Why: With 15 separate skills, agents must correctly trigger the right subset
for any task. "Create an animated video with captions" needed 6+ skills to
fire — each with ~90% trigger accuracy means ~53% chance of getting all of
them. With 3 skills, that same task needs just `hyperframes` + `gsap` (~90%
both fire). Progressive disclosure still works via references/ files loaded
on demand.

Also fixes: CLAUDE.md referenced `window.__GSAP_TIMELINE` (incorrect) —
corrected to `window.__timelines`.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat(cli): add --skip-skills flag to init command

Allow skipping the AI coding skills installation prompt during
`hyperframes init` with `--skip-skills`. Useful when skills are
already installed or when the user wants to scaffold without them.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix(skills): address code review feedback on consolidation

Restore content lost during over-compression:

- captions: fix overflow to `visible` (not hidden — clips glow effects),
  add container pattern warning, scale headroom formula, and self-lint
  placement guidance
- audio-reactive: restore sampling frequency pattern (per-frame tl.call
  loop vs single tween) and textShadow-on-container gotcha
- effects/typewriter: restore word rotation, appending words, spacing
  with static text, and multi-line cursor handoff patterns
- effects/audio-visualizer: restore spatial mapping conventions, fetch vs
  inline loading, WebGL/DOM rendering approaches, and canvas layering
- hyperframes-cli: restore --strict-all flag in render flags table

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix(cli): update build:copy and template for consolidated skill names

- build:copy: reference skills/hyperframes, skills/hyperframes-cli,
  skills/gsap instead of the old 15 skill directory names
- _shared/CLAUDE.md template: update skill table to consolidated names

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

packages/cli/src/commands/init.ts

@@ -7,6 +7,7 @@ export const examples: Example[] = [
   ["Start from an existing video file", "hyperframes init my-video --video clip.mp4"],
   ["Start from an audio file", "hyperframes init my-video --audio track.mp3"],
   ["Non-interactive mode (for CI or AI agents)", "hyperframes init my-video --non-interactive"],
+  ["Skip AI coding skills installation", "hyperframes init my-video --skip-skills"],
 ];
 import {
   existsSync,
@@ -390,12 +391,17 @@ export default defineCommand({
       type: "boolean",
       description: "Disable interactive prompts (for CI/agents)",
     },
+    "skip-skills": {
+      type: "boolean",
+      description: "Skip AI coding skills installation",
+    },
   },
   async run({ args }) {
     const templateFlag = args.template;
     const videoFlag = args.video;
     const audioFlag = args.audio;
     const skipTranscribe = args["skip-transcribe"] === true;
+    const skipSkills = args["skip-skills"] === true;
     const nonInteractive = args["non-interactive"] === true;
     const modelFlag = args.model;
     const languageFlag = args.language;
@@ -693,17 +699,19 @@ export default defineCommand({
     clack.note(files.map((f) => c.accent(f)).join("\n"), c.success(`Created ${name}/`));
 
     // Offer to install AI coding skills
-    const installSkills = await clack.confirm({
-      message: "Install AI coding skills? (for Claude Code, Cursor, Codex, etc.)",
-      initialValue: true,
-    });
-    if (clack.isCancel(installSkills)) {
-      clack.cancel("Setup cancelled.");
-      process.exit(0);
-    }
-    if (installSkills) {
-      const skillsCmd = await import("./skills.js").then((m) => m.default);
-      await runCommand(skillsCmd, { rawArgs: [] });
+    if (!skipSkills) {
+      const installSkills = await clack.confirm({
+        message: "Install AI coding skills? (for Claude Code, Cursor, Codex, etc.)",
+        initialValue: true,
+      });
+      if (clack.isCancel(installSkills)) {
+        clack.cancel("Setup cancelled.");
+        process.exit(0);
+      }
+      if (installSkills) {
+        const skillsCmd = await import("./skills.js").then((m) => m.default);
+        await runCommand(skillsCmd, { rawArgs: [] });
+      }
     }
 
     // Auto-launch studio preview