chore(marketplace): add ourdigital-skills local marketplace + fix README install docs

Add .claude-plugin/marketplace.json defining the ourdigital-skills local directory marketplace: 8 themed skill plugins (core/seo/notion/jamie/notebooklm/gtm/dintel/utils) bundling 66 skills, each path resolving to a root SKILL.md. Passes 'claude plugin validate'.

Fix README install instructions: clarify Quick Install scope (commands + venv + creds, not skills); correct the Claude Code skill symlink target to the skill root (was desktop/, which would not load); fix the Claude Desktop import step.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.claude-plugin/marketplace.json

@@ -139,24 +139,6 @@
         "./custom-skills/90-reference-curator",
         "./custom-skills/92-tui-design-template"
       ]
-    },
-    {
-      "name": "mac-optimizer",
-      "description": "macOS system health toolkit — read-only audits, cleanup, and security checks. Commands: mac-doctor, mac-packages, mac-environment, mac-security, mac-cleanup, mac-resources (+ mac-optimizer skill).",
-      "source": "./custom-skills/81-mac-optimizer",
-      "strict": false
-    },
-    {
-      "name": "multi-agent-guide",
-      "description": "Multi-agent collaboration framework — agent hierarchies, ownership rules, guardrails, handoff protocols, and CI/CD integration for Claude, Gemini, Codex, and human agents. Commands: quick-setup, setup-agents (+ multi-agent-guide skill).",
-      "source": "./custom-skills/91-multi-agent-guide",
-      "strict": false
-    },
-    {
-      "name": "dintel-bootstrap",
-      "description": "Install and verify D.intelligence custom MCP agents (DTM, D.DA, OurSEO) in settings.json; bootstrap a new machine or diagnose a broken install (dintel-bootstrap skill).",
-      "source": "./custom-skills/94-dintel-bootstrap",
-      "strict": false
     }
   ]
 }

custom-skills/81-mac-optimizer/.claude-plugin/plugin.json

@@ -15,5 +15,31 @@
     "packages",
     "disk-space"
   ],
-  "license": "MIT"
+  "license": "MIT",
+  "commands": [
+    {
+      "name": "mac-doctor",
+      "description": "Full macOS system health check — runs all 5 audit modules and presents unified findings"
+    },
+    {
+      "name": "mac-packages",
+      "description": "Audit package managers (Homebrew, npm, pip, pyenv) for outdated packages and issues"
+    },
+    {
+      "name": "mac-environment",
+      "description": "Audit shell environment — PATH, symlinks, shell configs, and startup time"
+    },
+    {
+      "name": "mac-security",
+      "description": "Security posture assessment — SIP, Gatekeeper, Firewall, FileVault, SSH, ports"
+    },
+    {
+      "name": "mac-cleanup",
+      "description": "Scan and clean caches, logs, and clutter — shows sizes first, cleans only with consent"
+    },
+    {
+      "name": "mac-resources",
+      "description": "Monitor CPU, memory, disk, battery, and identify resource-hungry processes"
+    }
+  ]
 }

custom-skills/91-multi-agent-guide/.claude-plugin/plugin.json

@@ -18,5 +18,15 @@
     "gemini",
     "codex"
   ],
-  "license": "MIT"
+  "license": "MIT",
+  "commands": [
+    {
+      "name": "multi-agent-setup",
+      "description": "Quick setup for multi-agent collaboration"
+    },
+    {
+      "name": "setup-agents",
+      "description": "Full interactive multi-agent setup"
+    }
+  ]
 }