feat: consolidate all Anthropic plugins into ECC v2.0.0

Ports functionality from 10+ separate plugins into ECC so users only
need one plugin installed. Consolidates: pr-review-toolkit, feature-dev,
commit-commands, hookify, code-simplifier, security-guidance,
frontend-design, explanatory-output-style, and personal skills.

New agents (8): code-architect, code-explorer, code-simplifier,
comment-analyzer, conversation-analyzer, pr-test-analyzer,
silent-failure-hunter, type-design-analyzer

New commands (9): commit, commit-push-pr, clean-gone, review-pr,
feature-dev, hookify, hookify-list, hookify-configure, hookify-help

New skills (8): frontend-design, hookify-rules, github-ops,
knowledge-ops, lead-intelligence, oura-health, pmx-guidelines, remotion

Enhanced skills (8): article-writing, content-engine, market-research,
investor-materials, investor-outreach, x-api, security-scan,
autonomous-loops — merged with personal skill content

New hook: security-reminder.py (pattern-based OWASP vulnerability
warnings on file edits)

Totals: 36 agents, 69 commands, 128 skills, 29 hook scripts

skills/remotion/rules/can-decode.md

@@ -0,0 +1,75 @@
+---
+name: can-decode
+description: Check if a video can be decoded by the browser using Mediabunny
+metadata:
+  tags: decode, validation, video, audio, compatibility, browser
+---
+
+# Checking if a video can be decoded
+
+Use Mediabunny to check if a video can be decoded by the browser before attempting to play it.
+
+## The `canDecode()` function
+
+This function can be copy-pasted into any project.
+
+```tsx
+import { Input, ALL_FORMATS, UrlSource } from "mediabunny";
+
+export const canDecode = async (src: string) => {
+  const input = new Input({
+    formats: ALL_FORMATS,
+    source: new UrlSource(src, {
+      getRetryDelay: () => null,
+    }),
+  });
+
+  try {
+    await input.getFormat();
+  } catch {
+    return false;
+  }
+
+  const videoTrack = await input.getPrimaryVideoTrack();
+  if (videoTrack && !(await videoTrack.canDecode())) {
+    return false;
+  }
+
+  const audioTrack = await input.getPrimaryAudioTrack();
+  if (audioTrack && !(await audioTrack.canDecode())) {
+    return false;
+  }
+
+  return true;
+};
+```
+
+## Usage
+
+```tsx
+const src = "https://remotion.media/video.mp4";
+const isDecodable = await canDecode(src);
+
+if (isDecodable) {
+  console.log("Video can be decoded");
+} else {
+  console.log("Video cannot be decoded by this browser");
+}
+```
+
+## Using with Blob
+
+For file uploads or drag-and-drop, use `BlobSource`:
+
+```tsx
+import { Input, ALL_FORMATS, BlobSource } from "mediabunny";
+
+export const canDecodeBlob = async (blob: Blob) => {
+  const input = new Input({
+    formats: ALL_FORMATS,
+    source: new BlobSource(blob),
+  });
+
+  // Same validation logic as above
+};
+```