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🤖 refactor: stream bounded history message readability evidence - #4219

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🤖 refactor: stream bounded history message readability evidence#4219
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codex/effect-history-scalar-evidencefrom
codex/effect-history-message-evidence

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@ThomasK33 ThomasK33 commented Sep 11, 2026

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Adds streamed message-readability evidence above the scalar reader in #4215. Oversized history rows need the same identity and readability decisions as ordinary JSON.parse rows without retaining entire message payloads. This prerequisite provides those facts; the separate row adapter and #4182 integration will consume them.

The projection checks every part and workflow element against the existing schema fragments, including constrained strings, finite numbers, strict objects, array limits and ordered workflow events. It preserves legacy role coercion, duplicate-key behavior and normalization detection. Scalar retention is bounded; nesting and distinct object-key bookkeeping retain the raw reader's documented limits. There is no persistence change or replacement authority decision in this layer.

Legacy array-coerced system roles remain readable collision evidence but are classified as system rows, matching the native reader. The system-role classification is gated by successful readability so malformed role objects are not coerced.

Validation: Final integrated validation passes on #4191 052fc084517c1a6fd8cfbecdf08c05b635358a32 (4026 tests / 36442 assertions) and #4209 02651d365f63c9dc04d95744207f42f8065d6f35 (4095 tests / 36847 assertions), across 54 affected suites each. Full source/test TypeScript and make static-check pass on both exact commits.

Risk: projection drift from the ordinary reader could change which historical messages count as readable. The implementation deliberately uses the current schema fragments and native-comparison tests; activation stays in the separately reviewed adapter/integration change.

This is one layer of the cancellation phase: #4214#4215#4219#4221#4182#4187#4191#4209. All eight PRs merge together after every member has current-head approval and passing CI.


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ThomasK33 added this pull request to stack #4216 September 11, 2026 13:36
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@codex review

Please review the current head. This remains part of the cancellation phase and will merge only with the completed, approved, green phase.


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Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review Status Commit Review trigger
📝 Code Review Completed 2026-09-11T19:32:45.080312Z a25b8b9 Manual request
🔒 Security Review Completed 2026-09-11T19:32:12.348007Z a25b8b9 Manual request
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🛡️ Codex Security Review · Automatically triggered

Security review completed. No security issues were found in this pull request.

Reviewed commit: 6491740f99

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Codex Review: Didn't find any major issues. 👍

Reviewed commit: 6491740f99

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@codex review

Please review the current head after the complete phase was composed on current main. All known findings have fixes and replies in their owning layers; the eight-member phase stays held until all members are approved and green.


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🛡️ Codex Security Review · Automatically triggered

Security review completed. No security issues were found in this pull request.

Reviewed commit: b85b1620d2

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Codex Review: Didn't find any major issues. Nice work!

Reviewed commit: b85b1620d2

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@ThomasK33
ThomasK33 force-pushed the codex/effect-history-message-evidence branch from b85b162 to 3f5459a Compare September 11, 2026 18:38
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@codex review

Please review the updated head 3f5459a5f644ce93a904f13e02158f93de9e5b3b against its stack base. Legacy array-coerced system roles remain readable collision evidence but are classified as system rows, matching the native reader. The system-role classification is gated by successful readability so malformed role objects are not coerced.

Final integrated validation passes on #4191 266cf35aac (4,009 tests) and #4209 d8c34d12ce (4,078 tests), each across 54 affected suites. Full source/test TypeScript and make static-check pass on both exact commits. The eight-member cancellation phase remains held until every member has current-head approval and passing CI.


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Codex Review: Didn't find any major issues. 🚀

Reviewed commit: 3f5459a5f6

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🛡️ Codex Security Review · Automatically triggered

Security review completed. No security issues were found in this pull request.

Reviewed commit: 3f5459a5f6

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---

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@ThomasK33
ThomasK33 force-pushed the codex/effect-history-message-evidence branch from 3f5459a to a25b8b9 Compare September 11, 2026 19:25
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@codex review

Please review updated head a25b8b993a2fd6312a0a5284d2d3bed77400c8b2 against its stack base. This layer’s own source delta is unchanged; it is rebased onto the merged CI-gate prerequisite #4223 and the reviewed ancestor fixes. Please review against its stack base.

Final integrated validation passes on #4191 052fc084517c1a6fd8cfbecdf08c05b635358a32 (4026 tests / 36442 assertions) and #4209 02651d365f63c9dc04d95744207f42f8065d6f35 (4095 tests / 36847 assertions), across 54 affected suites each. Full source/test TypeScript and make static-check pass on both exact commits.

All eight members remain held until current-head review approval and required CI are complete.


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🛡️ Codex Security Review · Automatically triggered

Security review completed. No security issues were found in this pull request.

Reviewed commit: a25b8b993a

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Codex Review: Didn't find any major issues. Keep them coming!

Reviewed commit: a25b8b993a

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