refactor(jobengine): delete TaskRunner service

- Remove TaskRunner source, tests, libraries (3 directories)
- Remove from compose, services-matrix, nginx, hosts, smoke tests
- Remove CLI commands, UI references, Authority scopes
- Remove docs, OpenAPI spec, QA state files
- Leave task_runner_id DB columns as nullable legacy
- PacksRegistry preserved (independent service)
- Eliminates 2 containers (taskrunner-web + taskrunner-worker)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docs/technical/architecture/component-map.md

@@ -22,7 +22,7 @@ Concise descriptions of every top-level component under `src/`, summarising the
 
 ## Policy & Governance
 - **Policy** — Policy Engine core libraries and services executing lattice logic across SBOM, advisory, and VEX evidence. Emits explain traces, drives Findings, Notifier, and Export Center (`docs/modules/policy/architecture.md`). 
-- **Policy Studio / TaskRunner / PacksRegistry** - Authoring, automation, and reusable template services that orchestrate policy and operational workflows (`docs/modules/packs-registry/guides/`, `docs/modules/cli/`, `docs/modules/ui/`). 
+- **Policy Studio / PacksRegistry** - Authoring and reusable template services that orchestrate policy and operational workflows (`docs/modules/packs-registry/guides/`, `docs/modules/cli/`, `docs/modules/ui/`). 
 - **Governance components** (Authority scopes, Policy governance, Console policy UI) are covered in `docs/security/policy-governance.md` and `docs/modules/ui/policies.md`.
 
 ## Identity, Signing & Provenance
@@ -35,7 +35,7 @@ Concise descriptions of every top-level component under `src/`, summarising the
 ## Scheduling, Orchestration & Automation
 - **Scheduler** — Detects advisory/VEX deltas and orchestrates deterministic rescan runs toward Scanner and Policy Engine (`docs/modules/scheduler/architecture.md`). 
 - **Orchestrator** — Central coordination service dispatching jobs (scans, exports, policy runs) to modules, working closely with Scheduler, CLI, and UI (`docs/modules/jobengine/architecture.md`). 
-- **TaskRunner** - Executes automation packs sourced from PacksRegistry, integrating with Orchestrator, CLI, Notify, and Authority (`docs/modules/packs-registry/guides/runbook.md`). 
+
 - **Signals** — Ingests runtime posture signals and feeds Policy/Notifier workflows (`docs/modules/zastava/architecture.md`, signals sections). 
 - **TimelineIndexer** — Builds timelines of evidence/events for forensics and audit tooling (`docs/modules/timeline-indexer/guides/timeline.md`).