fix(release): promote beta review remediation

[gnanirahulnutakki]

Summary

Promote only the beta review remediation landed by #319 from dev to main:

• preserve Argo CD truncation evidence on the first emitted retained history fact;
• align metrics and GitHub capability documentation with implemented boundaries;
• normalize console CSS and correct stale or environment-specific session records;
• retain GitSourceSnapshot and DesiredChange as pure contracts, with gitops.open-pr planned for P2 and GitHub-derived R2/R4 remediation evidence advisory-only.

Proven dev evidence

• Verified merge commit: e83186f
• Exact dev CI: https://github.com/ArdurAI/sith/actions/runs/30041872365
• Exact dev CodeQL: https://github.com/ArdurAI/sith/actions/runs/30041868803
• Security queues: 0 Dependabot, 0 code-scanning, 0 secret-scanning alerts
• All PR release: promote demo-ready dev for v0.3.0-beta.5 #317 and fix(release): remediate beta review findings #319 review threads resolved

Release boundary

This PR does not create a tag, publish a release, change GHCR visibility, mutate a cluster, add credentials, or enable GitHub write execution. Those remain separate fail-closed release steps.

Refs #318

Summary by CodeRabbit

• Bug Fixes

  • Corrected deployment history truncation markers so they appear on the first valid recorded observation.

• Style & Accessibility

  • Improved console typography consistency and strengthened visually hidden content support.

• Documentation

  • Clarified federation metrics, GitHub integration planning, testing instructions, and release review details.
  • Updated several session records to reflect completed work.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 411e3d82-0b62-4153-a5a5-fbf0fe855946

📥 Commits

Reviewing files that changed from the base of the PR and between 8e30a6e and e83186f.

📒 Files selected for processing (12)

• docs/SITH-NOTION.md
• docs/specs/E2-readfed-brain-integrations.md
• internal/connector/argocd/project.go
• internal/connector/argocd/project_test.go
• internal/hubserver/console_assets/console.css
• sessions/2026-07-15-e10-loopback-metrics.md
• sessions/2026-07-15-e10-process-audit-sink.md
• sessions/2026-07-15-e8-browser-oidc-session.md
• sessions/2026-07-16-brain-image-evidence.md
• sessions/2026-07-16-fleetcache-workspace-scope.md
• sessions/2026-07-21-deep-quality-audit.md
• sessions/2026-07-23-beta5-review-remediation.md

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📝 Walkthrough

Walkthrough

The PR updates federation and GitHub integration documentation, fixes Argo history truncation marking with regression coverage, normalizes console CSS declarations, and records session status, verification, and remediation updates.

Changes

Review remediation

Layer / File(s)	Summary
Federation contract documentation docs/SITH-NOTION.md, docs/specs/E2-readfed-brain-integrations.md	Federation metrics now use bounded request-time aggregates, while GitHub write planning and advisory evidence boundaries are clarified.
Argo history truncation projection internal/connector/argocd/project.go, internal/connector/argocd/project_test.go	Truncation is marked on the first emitted history observation, including when earlier entries lack deployedAt, with regression coverage.
Console CSS normalization internal/hubserver/console_assets/console.css	Mono font stacks, badge color keyword casing, and visually hidden clipping declarations are normalized.
Session status and verification records sessions/*	Session completion statuses, standard make commands, scope wording, and beta remediation details are updated.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Possibly related issues

• Issue 318 — Covers the Argo truncation fix, aggregate metrics documentation, planned GitHub writes, CSS normalization, and session updates included in this PR.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title is concise and accurately reflects the main change: promoting beta review remediation for release.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch dev

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