Initial commit: copilot-skill-factory v0.1.0

Meta-plugin for GitHub Copilot CLI that watches workflows and
auto-generates reusable agent skills.

- postToolUse hook: fingerprints and logs tool calls per session
- sessionEnd hook: sliding-window pattern detection across sessions
- sessionStart hook: injects context about proposed skills
- /skill-factory slash command for reviewing/managing skills
- 13 passing tests validating observer, analyzer, and edge cases

Inspired by hermes-skill-factory (Romanescu11/hermes-skill-factory)

hooks/hooks.json

@@ -0,0 +1,27 @@
+{
+  "version": 1,
+  "hooks": {
+    "postToolUse": [
+      {
+        "type": "command",
+        "matcher": "",
+        "bash": "root=\"${PLUGIN_ROOT:-${COPILOT_PLUGIN_ROOT:-.}}\"; node \"$root/bin/observer.js\" postToolUse",
+        "timeoutSec": 5
+      }
+    ],
+    "sessionEnd": [
+      {
+        "type": "command",
+        "bash": "root=\"${PLUGIN_ROOT:-${COPILOT_PLUGIN_ROOT:-.}}\"; node \"$root/bin/observer.js\" sessionEnd",
+        "timeoutSec": 30
+      }
+    ],
+    "sessionStart": [
+      {
+        "type": "command",
+        "bash": "root=\"${PLUGIN_ROOT:-${COPILOT_PLUGIN_ROOT:-.}}\"; node \"$root/bin/observer.js\" sessionStart",
+        "timeoutSec": 10
+      }
+    ]
+  }
+}