chore(todo): complete fix-session-isolation-placeholder-rows (incident resolved via #1117)

[joeharris76]

Pull Request

Description

Close out the Critical item of the auto-revert-incident TODO group (seeded in #1130). All four work units are done, so the item moves from _project/TODO/auto-revert-incident/planning/ to _project/DONE/auto-revert-incident/active/ with status: Completed.

Close-out evidence:

• w0/w1: PR fix(throughput): preserve first_row when padding cursor rows; count raw-cursor rows inside the timed window #1117 (the existing code-side fix threading first_row into the placeholder padding) was verified on a local merge tree against the develop tip (incident test file green: 10 passed + 11 slow passed), its branch was updated past the fix(test): de-flake uat throughput mtime-boundary resolver tests #1119 de-flake, and its already-enabled auto-merge landed it at 2026-07-11T00:16Z as 0db7299f36.
• w2: develop-post-merge run 29132264440 for the merge SHA is green — first green run since 2026-07-10 12:42Z.
• w3: all nine superseded auto-revert PRs (Revert feat(explorer): render funding on the card surfaces; bump read model to v3 (#1105) - develop went red post-merge #1120, Revert chore(todo): capture DuckLake post-merge review follow-ups (#1118) - develop went red post-merge #1121, Revert fix(test): de-flake uat throughput mtime-boundary resolver tests (#1119) - develop went red post-merge #1122, Revert chore(todo): seed SCD2 audit-followup TODOs (validation gating, soundness, portability coverage) (#1123) - develop went red post-merge #1125, Revert fix(compilation): make container-engine selection capability-aware for amd64 (#1124) - develop went red post-merge #1126, Revert fix/throughput timeout leak success gates (#1106) - develop went red post-merge #1127, Revert test(joinorder): full-archive cardinality, FK-integrity, and encoding assertions (#1128) - develop went red post-merge #1131, Revert chore(todo): seed auto-revert incident TODOs (fix landing, signature attribution, medium PR lane, placeholder safety) (#1130) - develop went red post-merge #1132, Revert chore(release): enforce v* tag-ruleset drift check (flip TAG_RULESET_ENFORCED) (#1129) - develop went red post-merge #1133) closed with comments linking the fix-forward.

Type of Change

• Refactor / chore (TODO bookkeeping only — no code changed)

Testing

• validate_todo.py on the moved file: valid.
• todo_cli.py check-graph: no cycles, no dangling references (the dependent placeholder-rows-fetch-safety item resolves the completed dep).

Public Contract Check

• No contract surfaces touched — _project/ TODO metadata only.

Documentation

• N/A — TODO bookkeeping.

Code Quality

• No code changed.

Artifact Hygiene

• No logs, outputs, or binaries committed (indexes are gitignored and were regenerated locally).

🤖 Generated with Claude Code

https://claude.ai/code/session_01FKz7FioN7DUZA44PrdQVYC

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