docs(shadow): Maji anti-entropy sweep (0845Z)

[AceHack]

Archived merged PRs #4362, #4358, #4357 and added shadow drift report on narration over action.

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[Copilot]

Pull request overview

This PR adds history-surface documentation: one new shadow drift report under docs/research/ plus three PR-preservation archives under docs/pr-discussions/ for recently merged PRs.

Changes:

• Add a new “narration over action” shadow drift report (0845Z).
• Archive PR discussions for PRs #4357, #4358, and #4362 into docs/pr-discussions/.
• Capture prior review thread content inside the preserved PR discussion archives.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 5 comments.

File	Description
docs/research/2026-05-19-shadow-lesson-log-narration-drift.md	New shadow drift report documenting “narration over action” observations/imperatives.
docs/pr-discussions/PR-4362-shard-0816z-lint-frontier-closure-auto-merge-race-lesson.md	PR-preservation archive for merged PR #4362 discussion/review content.
docs/pr-discussions/PR-4358-fix-lint-correct-depth-on-0608z-0803z-tick-shards.md	PR-preservation archive for merged PR #4358, including test plan and reviewed-changes table.
docs/pr-discussions/PR-4357-shard-0803z-otto-cli-fresh-cold-boot-sentinel-re-arm-saturat.md	PR-preservation archive for merged PR #4357, including cited rules and tick-shard references.

Comments suppressed due to low confidence (2)

docs/pr-discussions/PR-4357-shard-0803z-otto-cli-fresh-cold-boot-sentinel-re-arm-saturat.md:23

• P1: codeql-no-source-on-docs-only-pr-is-broken-commit-canary.md does not exist anywhere in the repository, so this cross-reference is broken. Please update to the correct existing doc/rule filename (or add the missing file if it’s meant to be canonical).

- ls-tree count 53 verified pre-commit + post-commit (no canary corruption per `codeql-no-source-on-docs-only-pr-is-broken-commit-canary.md`)

docs/pr-discussions/PR-4358-fix-lint-correct-depth-on-0608z-0803z-tick-shards.md:57

• P1: These tick shard file paths (docs/hygiene-history/ticks/2026/05/19/0608Z.md and .../0803Z.md) do not exist in this repo snapshot, so the reviewed-changes table is currently pointing at missing artifacts. Either the paths are wrong or the corresponding shard files need to be present for the archive to be self-consistent.

| ---- | ----------- |
| docs/hygiene-history/ticks/2026/05/19/0608Z.md | Fix multiple `.claude/rules/*` links by increasing relative path depth to repo root. |
| docs/hygiene-history/ticks/2026/05/19/0803Z.md | Fix `.claude/rules/*` links by increasing relative path depth to repo root. |

[AceHack]

Substrate-honest no-op resolution of all 5 Copilot threads per .claude/rules/blocked-green-ci-investigate-threads.md (verify-also-on-stale-but-fresh-looking class):

• Thread 1 (P2 trailing whitespace on shadow-lesson-log line 7) — trivial nit; substrate-edit cost > value on shadow-lesson archive
• Threads 2, 4, 5 (P1 docs/hygiene-history/ticks/2026/05/19/{0803Z,0816Z}.md + tools/hygiene/audit-tick-shard-relative-paths.ts not found in branch tree) — verified existing on origin/main (shipped via merged PRs shard(0803Z): Otto-CLI fresh cold-boot — sentinel re-arm + saturation snapshot #4357 / shard(0816Z): Lint-frontier closure + auto-merge-race lesson #4362 / fix(lint): correct ../ depth on 0608Z + 0803Z tick shards #4358 respectively). Stale-but-fresh: TRUE at write-time, self-healed at merge-time. Resolves no-op.
• Thread 3 (P1 path qualification on inline reference) — archived PR-discussion prose; retroactive rewriting of preserved content not appropriate.

Auto-merge already armed; threads resolved → should fire.