docs(shadow): Maji antigravity check and PR preservation

docs/pr-discussions/PR-3591-docs-archive-lior-preserve-pr-3544.md

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+---
+pr_number: 3591
+title: "docs(archive): Lior preserve PR 3544"
+author: "AceHack"
+state: "MERGED"
+created_at: "2026-05-15T21:13:51Z"
+merged_at: "2026-05-15T21:43:04Z"
+closed_at: "2026-05-15T21:43:04Z"
+head_ref: "lior/preserve-3544"
+base_ref: "main"
+archived_at: "2026-05-15T22:12:22Z"
+archive_tool: "tools/pr-preservation/archive-pr.ts"
+---
+
+# PR #3591: docs(archive): Lior preserve PR 3544
+
+## PR description
+
+Preserving recently merged PR #3544 into docs/pr-discussions/
+
+## Reviews
+
+### COMMENTED — @copilot-pull-request-reviewer (2026-05-15T21:15:10Z)
+
+## Pull request overview
+
+Archives merged PR #3544 conversation into `docs/pr-discussions/` as a preservation record, following the existing archive-tool pattern.
+
+**Changes:**
+- Adds a new PR archive markdown file with YAML frontmatter (pr metadata) and preserved PR description + review.

docs/pr-discussions/PR-3592-shard-tick-2112z-session-arc-plateau-recognized-brief-shards.md

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+---
+pr_number: 3592
+title: "shard(tick): 2112Z \u2014 session-arc plateau recognized; brief shards from here"
+author: "AceHack"
+state: "MERGED"
+created_at: "2026-05-15T21:17:49Z"
+merged_at: "2026-05-15T21:19:27Z"
+closed_at: "2026-05-15T21:19:27Z"
+head_ref: "shard/tick-2112z-otto-cli-2026-05-15"
+base_ref: "main"
+archived_at: "2026-05-15T22:12:21Z"
+archive_tool: "tools/pr-preservation/archive-pr.ts"
+---
+
+# PR #3592: shard(tick): 2112Z — session-arc plateau recognized; brief shards from here
+
+## PR description
+
+## Summary
+
+Tick 2112Z. Substrate-honest plateau-recognition shard. 28-tick arc has reached per-tick-value-add ~0; from here, brief shards acknowledge cron firing without producing thin-substrate. Triggering criteria for substantive resumption recorded.
+
+## Test plan
+
+- [x] Shard at canonical path
+- [ ] CI green
+- [ ] Auto-merge arms
+
+🤖 Generated with [Claude Code](https://claude.com/claude-code)
+
+## Reviews
+
+### COMMENTED — @copilot-pull-request-reviewer (2026-05-15T21:19:26Z)
+
+## Pull request overview
+
+Adds a new hygiene-history tick shard (2112Z) documenting that the current session arc has plateaued and that subsequent ticks should be brief “wait-state” acknowledgements until specific triggering conditions occur.
+
+**Changes:**
+- Introduces a new tick entry describing plateau recognition and the intended shorter shard format going forward.
+- Records explicit criteria for when to resume substantive tick shards.
+- Adds cross-references to the relevant memory file and `.claude/rules` guidance that motivates the change.
+
+## General comments
+
+### @chatgpt-codex-connector (2026-05-15T21:17:54Z)
+
+You have reached your Codex usage limits for code reviews. You can see your limits in the [Codex usage dashboard](https://chatgpt.com/codex/cloud/settings/usage).

docs/pr-discussions/PR-3593-feat-bg-b-0500-slice-3-wire-queue-state-guard-into-pollonce.md

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+---
+pr_number: 3593
+title: "feat(bg): B-0500 slice 3 \u2014 wire queue-state guard into pollOnce"
+author: "AceHack"
+state: "MERGED"
+created_at: "2026-05-15T21:35:52Z"
+merged_at: "2026-05-15T21:39:06Z"
+closed_at: "2026-05-15T21:39:06Z"
+head_ref: "feat/b0500-backlog-notifier-queue-guard-retry"
+base_ref: "main"
+archived_at: "2026-05-15T22:12:20Z"
+archive_tool: "tools/pr-preservation/archive-pr.ts"
+---
+
+# PR #3593: feat(bg): B-0500 slice 3 — wire queue-state guard into pollOnce
+
+## PR description
+
+Implements backlog row **B-0500** (Slice 3 of the B-0441 notifier). We now properly guard work assignments using `isAgentQueueEmpty`, ensuring agents only receive new proactive tasks when their queues are fully cleared.
+
+## Reviews
+
+### COMMENTED — @copilot-pull-request-reviewer (2026-05-15T21:37:34Z)
+
+## Pull request overview
+
+This PR completes Slice 3 of the B-0441 backlog-ready notifier by wiring the `isAgentQueueEmpty` queue-state guard into `pollOnce`. When the target agent's queue is non-empty (recent commits or open PRs by that agent), the poll iteration returns early with `queueBusy: true` and publishes no work-assignment envelopes, preventing assignment pile-up on busy agents.
+
+**Changes:**
+- Add `targetAgent` field to `NotifierConfig` and a `queueBusy` field to `PollResult`; populate via `isAgentQueueEmpty(config.targetAgent, adapters)` at the top of `pollOnce`.
+- Thread `adapters` through `runOnce`/`runDaemon` and add a `--target-agent <agent>` CLI flag.
+- Add two new tests (queue-busy → no publish; queue-empty → publishes) and update backlog rows B-0500/B-0441 to closed/shipped.
+
+### Reviewed changes
+
+Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.
+
+| File | Description |
+| ---- | ----------- |
+| tools/bg/backlog-ready-notifier.ts | Wire queue-state guard into `pollOnce`; add `targetAgent` config + `queueBusy` result field; plumb adapters through `runOnce`/`runDaemon`; add `--target-agent` flag. |
+| tools/bg/backlog-ready-notifier.test.ts | Add tests for queue-busy skip and queue-empty publish paths; update existing tests for new config field/flag. |
+| docs/backlog/P1/B-0500-...md | Mark B-0500 status closed and acceptance checkboxes ticked. |
+| docs/backlog/P1/B-0441-...md | Update slice-3 row of B-0441 table to ✅ shipped. |