docs(ai): migrate every agent example from the removed tools[] to skills

The prose-example gate caught two `os:check`-marked agent examples still
authoring `agent.tools` after this PR removed the field; three more
unmarked examples on the same page taught it too. All five now express
capability through `skills`, which is the point — these are examples an
AI copies verbatim, so leaving them on a slot that no longer exists would
have taught the removed pattern to the next generated app.

Each rewrite also names WHERE the tools come from (platform data tools,
`action_<name>` from an `ai.exposed` Action, `search_knowledge`), so the
examples teach the ADR-0109 default path rather than just dropping a
field.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BHjroNkLkajskKbJaidko4

Author: claude

content/docs/ai/agents.mdx

@@ -256,12 +256,9 @@ Always be professional and data-driven.`,
     maxTokens: 2000,
   },
 
-  // References to Actions/Flows exposed as tools (see "Actions as Tools").
-  tools: [
-    { type: 'flow', name: 'analyze_lead', description: 'Analyze a lead and provide a qualification score' },
-    { type: 'flow', name: 'suggest_next_action', description: 'Suggest the next best action for an opportunity' },
-    { type: 'action', name: 'generate_email', description: 'Generate a personalized email template' },
-  ],
+  // Capability comes from skills — the only tool-bearing slot (ADR-0064).
+  // Each skill names the platform tools and `action_<name>` tools it needs.
+  skills: ['lead_qualification', 'opportunity_coaching', 'email_drafting'],
 
   // RAG access: sources to recruit knowledge from + vector store indexes.
   knowledge: {
@@ -296,11 +293,10 @@ Always be empathetic and solution-focused.`,
     maxTokens: 1500,
   },
 
-  // `search_knowledge` is provided by the Knowledge Protocol tool, not declared inline.
-  tools: [
-    { type: 'flow', name: 'triage_case', description: 'Analyze a case and assign priority' },
-    { type: 'action', name: 'generate_response', description: 'Generate a customer response' },
-  ],
+  // Skills carry the tools. `case_triage` names the platform data tools it
+  // reads with; `knowledge_search` names `search_knowledge` (Knowledge
+  // Protocol). Neither needs a `defineTool` record.
+  skills: ['case_triage', 'knowledge_search', 'response_drafting'],
 
   knowledge: {
     sources: ['support-kb', 'cases'],
@@ -334,10 +330,10 @@ Use reputable data sources.`,
     maxTokens: 1000,
   },
 
-  tools: [
-    { type: 'flow', name: 'lookup_company', description: 'Look up company information' },
-    { type: 'flow', name: 'enrich_contact', description: 'Enrich contact information' },
-  ],
+  // The enrichment Flows are exposed with `ai.exposed`, so the runtime
+  // materialises `action_lookup_company` / `action_enrich_contact` for the
+  // skill to name.
+  skills: ['contact_enrichment'],
 });
 ```
 
@@ -370,11 +366,10 @@ Use the data tools to query records and aggregate metrics.`,
     maxTokens: 3000,
   },
 
-  // Built-in data tools (query_records / get_record / aggregate_data) are
-  // available to agents automatically once registered — see "Natural Language Queries".
-  tools: [
-    { type: 'flow', name: 'analyze_pipeline', description: 'Analyze sales pipeline health' },
-  ],
+  // Pipeline analysis is reasoning over the platform's own data tools
+  // (query_records / aggregate_data / visualize_data), which the skill
+  // names directly — see "Natural Language Queries".
+  skills: ['revenue_forecasting'],
 
   knowledge: {
     sources: ['opportunities', 'pipeline'],

content/docs/getting-started/common-patterns.mdx

@@ -397,23 +397,10 @@ export const supportAgent = defineAgent({
   instructions: `You are a helpful customer support agent. 
     You can search for customer records, look up order status, 
     and create support tickets. Always be polite and professional.`,
-  tools: [
-    {
-      type: 'query',
-      name: 'contact',
-      description: 'Search customer records'
-    },
-    {
-      type: 'query',
-      name: 'order',
-      description: 'Look up order status'
-    },
-    {
-      type: 'action',
-      name: 'create_support_ticket',
-      description: 'Create a support ticket'
-    }
-  ]
+  // Capability lives in skills, never inline on the agent (ADR-0064): a
+  // skill names the platform data tools plus the `action_<name>` tools
+  // materialised from your own AI-exposed Actions.
+  skills: ['customer_lookup', 'order_status', 'ticket_intake']
 });
 ```