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+---
+pr_number: 3950
+title: "backlog(B-0570): scarcity tracker for shared limited resources"
+author: "AceHack"
+state: "MERGED"
+created_at: "2026-05-16T22:00:13Z"
+merged_at: "2026-05-16T22:01:50Z"
+closed_at: "2026-05-16T22:01:50Z"
+head_ref: "feature/b-0570-scarcity-tracker-2026-05-16"
+base_ref: "main"
+archived_at: "2026-05-16T22:13:42Z"
+archive_tool: "tools/pr-preservation/archive-pr.ts"
+---
+
+# PR #3950: backlog(B-0570): scarcity tracker for shared limited resources
+
+## PR description
+
+## Summary
+
+Files B-0570 — design row for a scarcity tracker covering GitHub API GraphQL/REST budgets (and future: runner minutes, etc.). Empirically motivated by today's session saturating 5000/hr GraphQL across 3-4 concurrent agents authenticating as the same user.
+
+## Why now
+
+The 2026-05-16 session demonstrated the failure mode in real time: thread resolution on PR #3945 was blocked ~13 minutes by GraphQL exhaustion. A tracker would have surfaced \`graphql.remaining: 800\` mid-session; agents could have deferred or switched to REST.
+
+## Mitigation axes (sibling rows)
+
+The row's mitigation-axes table identifies 3 orthogonal axes; sibling rows file follow-on work:
+- **B-0571** — GitHub App for factory automation (separate rate-limit pool; primary mitigation)
+- **B-0572** — LFG GitHub tier audit (XS effort; Enterprise = 3× per-user headroom for free if already paid)
+- Per-user-account partition (e.g., Addison's account) — discretionary, no row
+
+## Diff
+
+- \`docs/backlog/P1/B-0570-*.md\` (170 lines) — design row with origin, acceptance criteria, 6-slice decomposition, design sketch, mitigation-axes table, composes-with
+- \`docs/BACKLOG.md\` (+1 line) — generated index updated via \`BACKLOG_WRITE_FORCE=1 bun tools/backlog/generate-index.ts\`
+
+🤖 Generated with [Claude Code](https://claude.com/claude-code)
+
+## Reviews
+
+### COMMENTED — @copilot-pull-request-reviewer (2026-05-16T22:01:18Z)
+
+## Pull request overview
+
+Adds a new P1 backlog row (B-0570) designing a scarcity tracker for shared limited resources (GitHub API GraphQL/REST budgets, runner minutes, etc.), motivated by a real GraphQL rate-limit exhaustion observed in the 2026-05-16 session. The generated backlog index is updated accordingly.
+
+**Changes:**
+- New per-row file `B-0570-...md` with origin, acceptance criteria, 6-slice decomposition, design sketch, and mitigation-axes table
+- Regenerated `docs/BACKLOG.md` index to include the new row
+
+### Reviewed changes
+
+Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
+
+| File | Description |
+| ---- | ----------- |
+| docs/backlog/P1/B-0570-scarcity-tracker-shared-limited-resources-github-api-2026-05-16.md | New design row for the scarcity tracker (P1, factory-infrastructure) |
+| docs/BACKLOG.md | Generated index entry for B-0570 |
diff --git a/docs/pr-discussions/PR-3951-backlog-b-0571-github-app-for-factory-automation-separate-ap.md b/docs/pr-discussions/PR-3951-backlog-b-0571-github-app-for-factory-automation-separate-ap.md
new file mode 100644
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+++ b/docs/pr-discussions/PR-3951-backlog-b-0571-github-app-for-factory-automation-separate-ap.md
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+---
+pr_number: 3951
+title: "backlog(B-0571): GitHub App for factory automation \u2014 separate API rate-limit pool"
+author: "AceHack"
+state: "MERGED"
+created_at: "2026-05-16T22:01:32Z"
+merged_at: "2026-05-16T22:04:03Z"
+closed_at: "2026-05-16T22:04:03Z"
+head_ref: "feature/b-0571-github-app-factory-2026-05-16"
+base_ref: "main"
+archived_at: "2026-05-16T22:13:42Z"
+archive_tool: "tools/pr-preservation/archive-pr.ts"
+---
+
+# PR #3951: backlog(B-0571): GitHub App for factory automation — separate API rate-limit pool
+
+## PR description
+
+## Summary
+
+Sibling row to [B-0570](https://github.com/Lucent-Financial-Group/Zeta/pull/3950) (scarcity tracker). Primary capacity-mitigation for the per-user GitHub API saturation flagged today. Files the design row for a "Zeta-Factory" GitHub App installation on the LFG repo, with installation-token auth replacing PAT auth for automated agent work.
+
+## Why
+
+GitHub Apps have separate rate-limit pools designed for automation (vs the shared per-user 5000/hr bucket that saturated today across 3-4 concurrent agents). Plus clean \`[bot]\` attribution. Plus least-privilege permissions scope.
+
+Per the mitigation-axes table in B-0570: this is the substrate-honest primary mitigation. Tier audit (B-0572) is the cheaper test (free 3× if LFG is already Enterprise); App is the architectural answer.
+
+## Diff
+
+- \`docs/backlog/P2/B-0571-*.md\` (118 lines) — design row with origin, acceptance criteria, 7-slice decomposition, design sketch, alternatives comparison, composes-with, substrate-honest caveats, open questions
+- \`docs/BACKLOG.md\` (+1 line) — generated index updated
+
+## Acceptance highlights
+
+- App created in LFG org with least-privilege permissions
+- \`tools/auth/get-installation-token.ts\` — JWT signing + installation token fetch
+- Token-rotation logic (~1hr expiry)
+- Migration: Otto bg worker + Lior antigravity loop switch to App auth
+- Tracker (B-0570) reports App + user pools separately
+
+## Composes with
+
+- B-0570 (scarcity tracker)
+- B-0572 (LFG tier audit — sibling mitigation)
+- \`methodology-hard-limits.md\` (App permissions must be least-privilege)
+
+🤖 Generated with [Claude Code](https://claude.com/claude-code)
+
+## Reviews
+
+### COMMENTED — @copilot-pull-request-reviewer (2026-05-16T22:02:34Z)
+
+## Pull request overview
+
+Files a P2 backlog row designing a "Zeta-Factory" GitHub App installation to give automated agents a separate API rate-limit pool from human-user PATs, as a primary mitigation for the shared-bucket saturation surfaced in sibling row B-0570.
+
+**Changes:**
+- Adds `docs/backlog/P2/B-0571-*.md` design row with acceptance criteria, 7-slice decomposition, design sketch, alternatives table, and open questions.
+- Updates `docs/BACKLOG.md` generated index with the new B-0571 entry under P2.
+
+### Reviewed changes
+
+Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
+
+| File | Description |
+| ---- | ----------- |
+| docs/backlog/P2/B-0571-github-app-factory-automation-2026-05-16.md | New per-row backlog file (118 lines) describing the GitHub App proposal. |
+| docs/BACKLOG.md | Generated index line for B-0571 added under P2. |