docs(archive): Preserve discussion for PR #5449

docs/pr-discussions/PR-5449-docs-b-0852-3-zeta-install-sh-step-6-77-cred-picker-integrat.md

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+---
+pr_number: 5449
+title: "docs(B-0852.3): zeta-install.sh Step 6.77 cred-picker integration row \u2014 interactive bake-in + zflash CLI override (Aaron 2026-05-27 USB push)"
+author: "AceHack"
+state: "MERGED"
+created_at: "2026-05-27T13:32:59Z"
+merged_at: "2026-05-27T13:34:21Z"
+closed_at: "2026-05-27T13:34:21Z"
+head_ref: "backlog/b-0852-3-cred-picker-integration-row-2026-05-27"
+base_ref: "main"
+archived_at: "2026-05-27T17:57:41Z"
+archive_tool: "tools/pr-preservation/archive-pr.ts"
+---
+
+# PR #5449: docs(B-0852.3): zeta-install.sh Step 6.77 cred-picker integration row — interactive bake-in + zflash CLI override (Aaron 2026-05-27 USB push)
+
+## PR description
+
+## Summary
+
+Files B-0852.3 backlog row capturing operator's 2026-05-27 three-message framing on device-flow-at-setup vs token-at-zflash. Implementation (B-0852.3a picker + B-0852.3b zflash CLI flags) starts immediately in follow-up PR.
+
+## Operator USB push
+
+> *"lets keep pushing forward and get cred persistance any anthing else we can make it in before i test again"*
+
+This row is the substrate-engineering anchor; the picker implementation lands separately to maximize chance of reaching next ISO before operator's USB test.
+
+## Sub-rows planned
+
+- B-0852.3a — Step 6.77 interactive picker (consumes B-0852.2b persist CLI)
+- B-0852.3b — zflash CLI override flags (per-cred non-interactive; AI-callable)
+- B-0852.3c — passphrase-source policy
+- B-0852.3d — empirical USB test of full chain
+
+## Test plan
+
+- [x] Single-file documentation row + BACKLOG.md regen
+- [x] Substrate-inventory pass per .claude/rules/verify-existing-substrate-before-authoring.md cited inline
+- [x] All upstream sub-rows merged (B-0852.1/.2a/.2b/.5/.10)
+- [x] Per .claude/rules/agent-worktree-hygiene-never-hold-main-...: isolated worktree; never touched operator's primary checkout
+
+🤖 Generated with [Claude Code](https://claude.com/claude-code)
+
+## General comments
+
+### @chatgpt-codex-connector (2026-05-27T13:33:08Z)
+
+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).