Address PR review comments for hooks implementation

- Fix getResourceType() to match relative paths like hooks/<name>/README.md
  and skills/<name>/SKILL.md using regex instead of string includes
- Extract hook events from hooks.json via parseHookMetadata() instead of
  non-existent frontmatter.event field in plugin README generation
- Update AGENTS.md to describe hooks as folder-based (README.md + hooks.json)
  instead of .hook.md files
- Update session-logger README to accurately reflect what scripts log
  (remove references to sessionId, duration, prompt content)

eng/collection-to-plugin.mjs

@@ -4,7 +4,11 @@ import fs from "fs";
 import path from "path";
 import readline from "readline";
 import { COLLECTIONS_DIR, ROOT_FOLDER } from "./constants.mjs";
-import { parseCollectionYaml, parseFrontmatter } from "./yaml-parser.mjs";
+import {
+  parseCollectionYaml,
+  parseFrontmatter,
+  parseHookMetadata,
+} from "./yaml-parser.mjs";
 
 const PLUGINS_DIR = path.join(ROOT_FOLDER, "plugins");
 
@@ -238,7 +242,11 @@ function generateReadme(collection, items) {
       const name = getDisplayName(item.path, "hook");
       const description =
         item.frontmatter?.description || item.frontmatter?.name || name;
-      const event = item.frontmatter?.event || "N/A";
+      // Extract events from hooks.json rather than frontmatter
+      const hookFolderPath = path.join(ROOT_FOLDER, path.dirname(item.path));
+      const hookMeta = parseHookMetadata(hookFolderPath);
+      const event =
+        hookMeta?.hooks?.length > 0 ? hookMeta.hooks.join(", ") : "N/A";
       lines.push(`| \`${name}\` | ${description} | ${event} |`);
     }
     lines.push("");