devlog: round-3 Cursor live-probe evidence and lock (docs-only)

[lidge-jun]

Summary

Docs-only: round-3 live-probe evidence and roadmap lock under devlog/_plan/260822_senpi_cursor_transfer/ (200 probe plan, 210 maxMode BLOCKED/plan-gated, 220 rotation NOT-REPRODUCED, 230 issue #2305 IMPLEMENT with root cause, 240 client-version NOOP, 250 billed-usage NOOP, 260 bare-RE size-prior IMPLEMENT — live-evidenced #2320 refinement, 290 lock).

Probes ran on a live Cursor account on the maintainer's probe host; transcripts are redacted (no tokens/account ids) and raw dumps were deleted from the host per the doc-200 hygiene contract.

Verification

Docs-only (devlog markdown). bun run privacy:scan passed. Nothing in the build/test path reads devlog/.

Checklist

• Target branch dev
• Docs-only; no runtime change
• privacy:scan green
• Probe transcripts redacted; no pre-disclosure security content

Summary by CodeRabbit

• Documentation
  • Added a round-three probe plan covering model capabilities, context handling, continuation behavior, client versions, and usage reporting.
  • Documented live probe results, including unchanged model catalogs, normal billed usage, and deferred rotation and mode-toggle changes.
  • Recorded a planned refinement to distinguish entitlement failures from genuine context overflows.
  • Added implementation guidance for preventing display aliases from appearing as assistant text.
  • Captured probe verdicts, safety constraints, and prioritized follow-up work.

[github-actions]

✅ Deterministic PR hygiene checks passed.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: 9953aa15-fd63-45b4-9f30-3891c6813678

📥 Commits

Reviewing files that changed from the base of the PR and between 77c15ff and d6b8f8b.

📒 Files selected for processing (8)

• devlog/_plan/260822_senpi_cursor_transfer/200_round3_probe_plan.md
• devlog/_plan/260822_senpi_cursor_transfer/210_maxmode.md
• devlog/_plan/260822_senpi_cursor_transfer/220_rotation.md
• devlog/_plan/260822_senpi_cursor_transfer/230_issue2305.md
• devlog/_plan/260822_senpi_cursor_transfer/240_client_version.md
• devlog/_plan/260822_senpi_cursor_transfer/250_billed_usage.md
• devlog/_plan/260822_senpi_cursor_transfer/260_re_classification_refinement.md
• devlog/_plan/260822_senpi_cursor_transfer/290_round3_lock.md

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📝 Walkthrough

Walkthrough

This PR adds round-3 Cursor transfer probe plans and reports. It records probe outcomes, defers unresolved behavior, specifies two implementation plans, and updates the round-3 parity lock. No production code changes are included.

Changes

Cursor transfer round-3 evaluation

Layer / File(s)	Summary
Probe cycle definition devlog/_plan/260822_senpi_cursor_transfer/200_round3_probe_plan.md:1-58	Defines five live probes, redaction and quota rules, permitted endpoints, and required verdict documents.
Probe results and deferred behavior devlog/_plan/260822_senpi_cursor_transfer/210_maxmode.md:1-28, 220_rotation.md:1-15, 240_client_version.md:1-14, 250_billed_usage.md:1-13	Records maxMode entitlement blocking, successful rotation tests, retained client-version pin, and normal billed usage.
Follow-up implementation plans devlog/_plan/260822_senpi_cursor_transfer/230_issue2305.md:1-27, 260_re_classification_refinement.md:1-31	Specifies marker-scoped text normalization for issue 2305 and size-aware classification for bare resource_exhausted errors.
Round-3 lock and parity record devlog/_plan/260822_senpi_cursor_transfer/290_round3_lock.md:1-31	Prioritizes the two implementation plans, closes the evaluated probes, and updates the senpi comparison verdict.

Estimated code review effort: 2 (Simple) | ~10 minutes

Suggested reviewers: ingwannu

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch codex/cursor-round3-probe-docs

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