Implemented Ad-Hoc Task handling

workplans/archived/260329-ADHOC-2026-03-29.md

@@ -0,0 +1,67 @@
+---
+id: ADHOC-2026-03-29
+type: workplan
+title: "Ad Hoc Tasks — 2026-03-29"
+domain: custodian
+repo: the-custodian
+status: done
+owner: custodian
+topic_slug: custodian
+created: "2026-03-29"
+updated: "2026-03-29"
+state_hub_workstream_id: "370c2481-6806-41eb-a917-f8874f03184f"
+---
+
+# ADHOC-2026-03-29 — Ad Hoc Tasks
+
+Migrated from the legacy `interactive-the-custodian` pseudo-workstream. These
+tasks were completed before the Ad Hoc Tasks file-backed convention existed.
+
+## Three-tier token recording on task done
+
+```task
+id: ADHOC-2026-03-29-T01
+status: done
+priority: medium
+state_hub_task_id: "83919aef-7e93-44a2-97f6-d4f57b71acce"
+```
+
+Added heuristic fallback (1000/500), workplan proration tier, and exact-count
+tier to update_task_status. Token event always created on done.
+
+## Add record_interactive_task MCP tool
+
+```task
+id: ADHOC-2026-03-29-T02
+status: done
+priority: medium
+state_hub_task_id: "55eb2176-fa4c-4abb-bd1a-88ab87749b91"
+```
+
+New MCP tool that found or created an interactive workstream per repo and
+recorded ad-hoc tasks with token consumption in a single call.
+
+## Token note taxonomy and seed record correction
+
+```task
+id: ADHOC-2026-03-29-T03
+status: done
+priority: medium
+state_hub_task_id: "ba2543ef-2ae9-4870-8d28-4578c2ef30c4"
+```
+
+Introduced measured/userbased/workplan/heuristic note taxonomy. Fixed two
+null-note seed records to userbased. Added token_note field to TaskUpdate
+schema and note param to both MCP tools.
+
+## Post-WP-0030 fixes and improvements
+
+```task
+id: ADHOC-2026-03-29-T04
+status: done
+priority: medium
+state_hub_task_id: "f1512b0a-3f04-4c8b-a26f-ce82cbdd7390"
+```
+
+Fixed deep-link prefix handling, FileAttachment to fetch migration, missing
+landing pages, and FK link cells with async title help-tips after WP-0030.