Background sign-in: Railspike debug log

Step: 1 Date: 2026-10-28 UTC Debug mode: enabled (project marker present at cycle creation) Artifact: Solution assessment

Necessary/useful instructions

• Step 1 review and revision: recording the user's selected direction separately from step approval preserved the requested discussion boundary. Retain the explicit distinction.

• Experimental Effort Estimation, checkpoints: prior source inspection was disclosed and pristine intake left missing. Retain this rule to prevent invented prospective evidence.

• Step 1 recommendation and vertical-slice requirement: ordinary thread entry, interruption preservation and failed-authentication recovery define a testable outcome beyond merely suppressing a reload. Retain.

Redundant/unnecessary instructions

No supported findings.

Outcome: Step 1 only; no implementation or commits. Later-step navigation links intentionally target artifacts not yet authorized or created.

— Codex · 2026-10-28 UTC

Step 2 — 2026-10-28 UTC

Artifact: Feature description Debug mode: enabled (inherited)

Necessary/useful instructions

• Step 2 shared-component inventory exposed access-history and browser-signing callers alongside the known Account/invitation flows; retain the inventory requirement to avoid treating redirect policy as an isolated change.

• Step 2 completion/recovery boundary made document continuity, usable session and explicit retry separate acceptance obligations; retain.

Redundant/unnecessary instructions

No supported findings.

Outcome: Approved Step 1 recorded; Step 2 only. Estimate 0.35 reaffirmed; no implementation or commits.

— Codex · 2026-10-28 UTC

Step 3 — 2026-10-28 UTC

Artifact: Development plan Debug mode: enabled (inherited)

Necessary/useful instructions

• Step 3 completion contract and risk sequencing made shared-flight navigation and identity checks prerequisites of browser acceptance. Retain the requirement to resolve material risks before dependent stages.

• Extended estimates keep each stage's verification/documentation separate from the independently judged cycle projection. Retain explicit non-additivity and the shared-acceptance owner.

• Planning commit boundary keeps the accumulated study ledger out of the restricted planning-only commit; retain the closeout distinction.

Redundant/unnecessary instructions

• Step 3 Do/After's one-page limit competes with the mandatory per-stage fields and checkpoint metadata. This four-stage plan prioritizes complete, concise reviewable fields over a literal printed-page limit. Suggest a word budget or compact stage table allowance when every required field must remain explicit.

Outcome: Approved Step 2 recorded; four stages, 0.35 whole-cycle projection reaffirmed. Stage-work originals 0.12/0.10/0.10/0.08, not summed. No implementation or commits. Step 4 navigation target remains intentionally absent.

— Codex · 2026-10-28 UTC

Step 4 — 2026-10-29 UTC

Artifact: Implementation summary Debug mode: enabled (inherited)

Necessary/useful instructions

• Stage Boundary Protocol kept normal completion, shared-call races and real-browser verification in separate verified commits; retain this sequencing.

• Completion Contract exposed Account's testing-only reload as another in-scope interruption and required usable-session checks beyond preserving text. Retain end-to-end requirements.

• Honest verification/effort records distinguish the baseline archive test failure, fixture corrections, physical-device omissions and retrospective scope from the projected score. Retain these distinctions.

Redundant/unnecessary instructions

No new supported findings beyond Step 3's recorded page-length tension.

Outcome: Four stages locally complete. Whole-cycle projection 0.35 retained; separate retrospective 0.45. No dependency delta or scope expansion. Full suite/physical devices/deployment and maintainer acceptance remain explicitly unclaimed.

— Codex · 2026-10-29 UTC

Final handoff verification: 2026-10-29 UTC. Planning a9372972 contains only the approved plans, existing debug log and plan-index entry; implementation summary first appears in bb4355e2. All four stage commits include summary updates: bb4355e2, 121796eb, 71df7611, 3e7ccbf6. Cycle links and whitespace checks pass; closeout ledger is in the final stage. This log-only handoff addition follows the final stage without amending it. Required device/deployment omissions, baseline archive failure, pending maintainer judgment and zero dependency delta are recorded in the summary. No new diagnostic findings.

— Codex · 2026-10-29 UTC