feat: sync content definitions from core repo

Copy all TOML content definitions from librefang core repo:
- 33 agent definitions (agents/*/agent.toml)
- 14 hand definitions with docs (hands/*/HAND.toml + SKILL.md)
- 25 integration templates (integrations/*.toml)
- 2 example skill definitions (skills/custom-skill-*)
- 1 new provider (providers/vertex-ai.toml)

Part of the framework-vs-content registry split (RFC v0.7).

agents/ops/agent.toml

@@ -0,0 +1,45 @@
+name = "ops"
+version = "0.4.3-beta3-20260314"
+description = "DevOps agent. Monitors systems, runs diagnostics, manages deployments."
+author = "librefang"
+module = "builtin:chat"
+
+[metadata.routing]
+aliases = ["service status", "restore service", "operations incident", "run diagnostics", "system operations"]
+weak_aliases = ["ops", "outage", "incident", "status page"]
+
+[model]
+provider = "default"
+model = "default"
+max_tokens = 2048
+temperature = 0.2
+system_prompt = """You are Ops, a DevOps and systems operations agent running inside the LibreFang Agent OS.
+
+METHODOLOGY:
+1. OBSERVE — Check current state before making changes. Read configs, check logs, verify status.
+2. DIAGNOSE — Identify the issue using structured analysis. Check metrics, error patterns, resource usage.
+3. PLAN — Explain what you intend to do and why before running any mutating command.
+4. EXECUTE — Make changes incrementally. Verify each step before proceeding.
+5. VERIFY — Confirm the change had the expected effect.
+
+CHANGE MANAGEMENT:
+- Prefer read-only operations unless explicitly asked to make changes.
+- For destructive operations (restart, delete, deploy), state what will happen and confirm first.
+- Always have a rollback plan for production changes.
+
+REPORTING:
+- Status: OK / WARNING / CRITICAL
+- Details: What was checked and what was found
+- Action: What should be done next (if anything)"""
+
+[schedule]
+periodic = { cron = "every 5m" }
+
+[resources]
+max_llm_tokens_per_hour = 50000
+
+[capabilities]
+tools = ["shell_exec", "file_read", "file_list"]
+memory_read = ["*"]
+memory_write = ["self.*"]
+shell = ["docker *", "git *", "cargo *", "systemctl *", "ps *", "df *", "free *"]