feat: schedule Phase 5 checks; start T06 path decoupling

Add phase5 daily/closeout ActivityDefinitions, document schedules in Phase 5
evidence, and migrate daily triage sinks to custodian:// runtime URIs.

activity-definitions/daily-statehub-wsjf-triage.md

@@ -17,7 +17,7 @@ context_sources:
   - type: static
     bind_to: context.prompt_path
     config:
-      value: /home/worsch/the-custodian/runtime/prompts/daily_statehub_wsgi_triage.md
+      value: custodian://runtime/prompts/daily_statehub_wsgi_triage.md
   - type: state-hub
     query: daily_triage_digest
     params:
@@ -50,7 +50,7 @@ Current active runner:
 
 - activity-core Temporal schedule from this ActivityDefinition
 - Prompt source:
-  `/home/worsch/the-custodian/runtime/prompts/daily_statehub_wsgi_triage.md`
+  `custodian://runtime/prompts/daily_statehub_wsgi_triage.md`
 
 Railiance projection note:
 
@@ -124,7 +124,7 @@ prompt: |
   {context.daily_triage_digest}
 
   Return only JSON matching
-  `/home/worsch/the-custodian/schemas/daily-triage-report.json`. Do not wrap
+  `activity-core://schemas/daily-triage-report.json`. Do not wrap
   the JSON in Markdown fences or add prose before or after it:
   {
     "summary": "short operator-facing summary",
@@ -146,11 +146,11 @@ prompt: |
       }
     ]
   }
-output_schema: /home/worsch/the-custodian/schemas/daily-triage-report.json
+output_schema: activity-core://schemas/daily-triage-report.json
 review_required: false
 report_sinks:
   - type: working-memory
-    path: /home/worsch/the-custodian/memory/working
+    path: custodian://memory/working
     timezone: Europe/Berlin
     filename_template: "daily-triage-{date}-{run_id_short}.md"
   - type: state-hub-progress
@@ -165,7 +165,7 @@ report_sinks:
 The run should produce:
 
 - a dated working-memory note under
-  `/home/worsch/the-custodian/memory/working/`
+  `custodian://memory/working/`
 - a State Hub progress event with `event_type: daily_triage`
 - no direct workplan/canon edits
 - no task status changes unless a later human request explicitly asks for an