Drafting and review foundations alpha v0.7.0-alpha.3

Roadmap stage: evidence-backed-cv-drafting
Channel: alpha
Source commit: 0102d10

Validation: https://github.com/akoita/draft-loop/actions/runs/32974219593
Stage issue: #69
SBOM: CycloneDX JSON is attached to the release.
Checkpoint status: this alpha.3 checkpoint freezes drafting/review foundations and Windows user-session hardening but does not validate or complete the v0.7 drafting outcome.
Provenance: not requested for this run.

Known limitations: CKB roll-up/product reactivation-retrieval, profile, opportunity, planning, complete-CV, writing-policy, runtime review/readiness/rendering integration, signing, and automatic updates remain incomplete; CLI remains source-distributed.

What's Changed

• docs(release): record v0.7.0-alpha.2 evidence by @akoita in #187
• docs: break up dense architecture prose by @akoita in #188
• feat(evaluations): define independent readiness report by @akoita in #189
• feat(orchestration): define author adjudication trace by @akoita in #190
• feat(readiness): define stopping decision contract by @akoita in #191
• feat(rendering): add controlled layout QA contract by @akoita in #192
• feat(orchestrator): persist adjudicated revisions by @akoita in #193
• feat(storage): delete confirmed CKB-owned data by @akoita in #194
• docs(roadmap): make milestone 3 dependency-closed by @akoita in #195
• fix(providers): scrub Windows session environment by @akoita in #196
• chore(release): prepare v0.7.0-alpha.3 by @akoita in #197

Full Changelog: v0.7.0-alpha.2...v0.7.0-alpha.3