OpenAI session authentication alpha v0.7.0-alpha.4

Roadmap stage: evidence-backed-cv-drafting
Channel: alpha
Source commit: d4b7840

Validation: https://github.com/akoita/draft-loop/actions/runs/32994139494
Stage issue: #69
SBOM: CycloneDX JSON is attached to the release.
Checkpoint status: this alpha.4 checkpoint adds packaged-desktop OpenAI authentication selection (API key or authenticated Codex/ChatGPT session), independent per-provider persisted preferences, strict environment precedence, restart-required/no-silent-fallback behavior, inherited Windows user-session environment hardening, and Codex reasoning lifecycle compatibility while rejecting tool events and ignoring reasoning content; it does not validate or complete the v0.7 drafting outcome.
Provenance: not requested for this run.

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

What's Changed

• docs(release): record v0.7.0-alpha.3 evidence by @akoita in #198
• feat(desktop): add OpenAI session authentication by @akoita in #199
• chore(release): prepare v0.7.0-alpha.4 by @akoita in #200

Full Changelog: v0.7.0-alpha.3...v0.7.0-alpha.4