fix(kyberforge): resolve plugin-create path bug, validate.sh false positives, and write-skill YAML error

- plugin-create/SKILL.md: fix ${CLAUDE_PLUGIN_ROOT} path (create-plugin → plugin-create, 4 occurrences)
- plugin-create/SKILL.md: delegate reserved name validation to new references/reserved-names.md (complete list)
- plugin-create/SKILL.md: add displayName reminder in step 4, full-validation pointer in step 7
- plugin-create/references/reserved-names.md: complete reserved name list extracted from claude-code.md
- plugin-create/references/manifest-fields.md: quick-ref for both plugin.json manifests and marketplace entry
- plugin-create/META.md: update stale when: and references: fields to reflect post-migration paths
- plugin-create/assets/plugin-template/hooks.json: unify empty hooks schema to {} (was [])
- write-skill/SKILL.md: fix YAML frontmatter parse error — wrap description in >- block scalar
- validate.sh: strip backtick spans before ../  check to eliminate documentation false positives
- inventory.sh: same backtick-span fix, applied to both outer check and per-line reporting
- tests/test_scripts.sh: fix SCRIPTS_DIR path to skills/marketplace-architect/scripts/

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

plugins/kyberforge/skills/plugin-create/references/manifest-fields.md

@@ -0,0 +1,72 @@
+# Manifest Field Reference
+
+Quick reference for the two plugin manifests generated by this skill.
+Source of truth: `${CLAUDE_PLUGIN_ROOT}/skills/marketplace-architect/references/claude-code.md`
+and `copilot-cli.md` in the same directory.
+
+---
+
+## Claude Code — `.claude-plugin/plugin.json`
+
+Only `name` is required. Add other fields only when needed.
+
+```json
+{
+  "name": "my-plugin",
+  "displayName": "My Plugin",
+  "description": "What it does",
+  "author": { "name": "Name", "url": "https://..." },
+  "license": "MIT",
+  "keywords": []
+}
+```
+
+- `displayName` — human-readable label shown in the Claude Code UI. Update it to a
+  title-cased string after placeholder substitution — it defaults to the kebab slug.
+- `version` — omit to use git SHA per commit (recommended). Set only for explicit release gates.
+- Component paths (`skills/`, `agents/`, etc.) are declared in the marketplace entry, not here.
+
+---
+
+## Copilot CLI — `plugin.json` at plugin root
+
+```json
+{
+  "name": "my-plugin",
+  "description": "What it does",
+  "author": { "name": "Name", "email": "you@example.com" },
+  "license": "MIT",
+  "keywords": [],
+  "agents": "agents/",
+  "skills": ["skills/"],
+  "hooks": "hooks.json",
+  "mcpServers": ".mcp.json"
+}
+```
+
+- `author.email` (not `url`) — Copilot uses email; Claude uses url. Both manifests diverge here.
+- Component paths are declared inline in this manifest (Copilot requires them; Claude ignores them).
+
+---
+
+## Marketplace entry (in `.claude-plugin/marketplace.json`)
+
+```json
+{
+  "name": "my-plugin",
+  "source": "./plugins/my-plugin",
+  "description": "..."
+}
+```
+
+- `source` must start with `./` for Claude Code compatibility.
+- Do not set `version` here if it is also set in `plugin.json` — `plugin.json` wins silently.
+
+---
+
+## Environment variables (for hooks and MCP configs)
+
+- `${CLAUDE_PLUGIN_ROOT}` — absolute path to the plugin's installation cache. Use for all
+  in-plugin file references in hooks and `.mcp.json`. Changes on update.
+- `${CLAUDE_PLUGIN_DATA}` — persistent directory that survives updates. Use for state,
+  caches, and `node_modules`.