chore: WIP pre-implement

Bundled hygiene commit before cycle-3 /implement (AZ-776, AZ-777). Mixes
two concerns by user choice (autodev option B):

- Cycle-3 autodev artifacts not yet committed by Step 9 (new-task):
  task specs for AZ-776 / AZ-777 under _docs/02_tasks/todo/ and the
  updated _docs/02_tasks/_dependencies_table.md.
- Accumulated skill / rule tooling maintenance under .cursor/ (skills:
  autodev, code-review, decompose, deploy, implement, new-task, plan,
  refactor, retrospective, test-spec; rules: coderule, cursor-meta,
  meta-rule, testing; new release skill scaffolding).
- Autodev bootstrap state: _docs/_autodev_state.md (step 10 in_progress)
  and _docs/_process_leftovers/2026-05-11_d_cross_cve_1_opencv_pin_deferred.md
  (replay timestamp refreshed; gtsam 4.2 still numpy<2-only).

Co-authored-by: Cursor <cursoragent@cursor.com>

.cursor/skills/decompose/SKILL.md

@@ -65,6 +65,7 @@ Announce the selected entrypoint and resolved paths to the user before proceedin
 | 1 Bootstrap Structure | `steps/01_bootstrap-structure.md` | ✓ | — | — |
 | 1t Test Infrastructure | `steps/01t_test-infrastructure.md` | — | — | ✓ |
 | 1.5 Module Layout | `steps/01-5_module-layout.md` | ✓ | — | — |
+| 1.7 System-Pipeline Tasks | `steps/01-7_system-pipeline-tasks.md` | ✓ | — | — |
 | 2 Task Decomposition | `steps/02_task-decomposition.md` | ✓ | ✓ | — |
 | 3 Blackbox Test Tasks | `steps/03_blackbox-test-decomposition.md` | — | — | ✓ |
 | 4 Cross-Verification | `steps/04_cross-verification.md` | ✓ | — | ✓ |
@@ -191,6 +192,20 @@ Read and follow `steps/01-5_module-layout.md`.
 
 ---
 
+### Step 1.7: System-Pipeline Tasks (implementation mode only)
+
+Read and follow `steps/01-7_system-pipeline-tasks.md`.
+
+This step exists because per-component task decomposition (Step 2)
+produces one task per component but NEVER produces a task whose
+deliverable is "the production code that drives the end-to-end
+pipeline by calling each component in order against real inputs".
+The architecture document describes the loop; nobody owns it. The
+GPS-passthrough incident (May 2026) is the canonical failure this
+step prevents.
+
+---
+
 ### Step 2: Task Decomposition (implementation and single component modes)
 
 Read and follow `steps/02_task-decomposition.md`.
@@ -243,6 +258,8 @@ Read and follow `steps/04_cross-verification.md`.
 │       [BLOCKING: user confirms structure]                       │
 │  1.5  Module Layout       → steps/01-5_module-layout.md         │
 │       [BLOCKING: user confirms layout]                          │
+│  1.7  System-Pipeline     → steps/01-7_system-pipeline-tasks.md │
+│       [BLOCKING: user confirms pipeline owners]                 │
 │  2.   Component Tasks     → steps/02_task-decomposition.md      │
 │  4.   Cross-Verification  → steps/04_cross-verification.md      │
 │       [BLOCKING: user confirms dependencies]                    │