docs: remediate T78 CLI capability migration contract (review deltas)

Applies the docs-delta review dispositions: frontmatter and header flip to
active with implementation held by M0, merge-invariant authority statement,
PRD trunk-scoped contract label, SITEMAP qualifier swap, brain/fleet-comms
provenance scoping for the registry-freeze citations, and removal of the
four trailing-space hard breaks (ranged diff --check now clean). Docs-only.

docs/requirements/cli-capability-migration.md

@@ -1,19 +1,20 @@
 ---
 kind: spec
-status: draft
+status: active
 source_of_truth: true
 ---
 
 # Official Mosaic CLI Capability and Tool Migration
 
-**Workstream:** T78  
-**Status:** DRAFT for contract freeze  
-**Decision authority:** Jason Woltje  
-**Design owner:** Vision  
-**Integration trunk:** `next`
+- **Workstream:** T78
+- **Status:** active requirements contract; implementation held by the M0 gates
+- **Decision authority:** Jason Woltje
+- **Design owner:** Vision
+- **Integration trunk:** `next`
 
-This draft becomes authoritative only after reviewed squash merge to `next`. Until then, the
-mission plan and the T78 decision register remain the governing planning records.
+This contract is authoritative only on the integration trunk `next`; branch copies are proposals.
+Publication does not authorize implementation until the M0 milestone, task-graph, interface, and
+partition gates pass.
 
 ## 1. Purpose
 
@@ -333,13 +334,14 @@ The v1 resolver contract is jointly frozen:
   `CLI-T78-REGISTRY-FREEZE ACCEPT`, then accepted amended C2 through token
   `CLI-T78-REGISTRY-C2 ACCEPT`.
 - Homelab `orch-01`, issue and resolver-contract custodian, accepted C1 and C3 and supplied the
-  adopted C2 rolling-version amendment in fleet-comms message
+  adopted C2 rolling-version amendment in the fleet-comms repository, message
   `sites/usc/20260827T004509Z__to-vision__from-homelab.orch-01__683e4c.md`, blob
   `35a7c4c1e54eb9196abeef3135d211ee1dfc46db`.
 
-Durable lane provenance is recorded in `registry-freeze-evidence.md` and the independent
-custodian-authored `registry-freeze-fred-ack.md`. Schema evolution after this freeze still follows
-CFG-REQ-006.
+Durable lane provenance is recorded in the Mosaic brain repository at
+`fleet/lanes/cli-migration/registry-freeze-evidence.md` and the independent custodian-authored
+`fleet/lanes/cli-migration/registry-freeze-fred-ack.md`. Schema evolution after this freeze still
+follows CFG-REQ-006.
 
 ## 8. Capability catalog and policy