docs: 5 deposits — CSS recovery, UI symptom-vs-purpose, git-stash scope, dogfood recipe, guard-behind-the-surface

[TapeshN]

Summary

• 5 paraphrased learnings deposited as part of clearing the HELD review backlog.
• Each entry is its own commit; all pass the local IP scrub (blocklist + secret + machine-path patterns) on both raw source and paraphrased text.

Entries

• guardrails/2026-07-04-orphaned-css-class-recover-deleted-styles-from-git-dont-reinvent.md
• guardrails/2026-07-04-a-ui-render-complaint-can-hide-a-deeper-information-architecture-complaint.md
• guardrails/2026-07-04-verify-every-path-to-guarded-data-not-just-the-surface-the-tests-drive.md
• infra/2026-07-04-git-stash-create-captures-the-whole-working-tree-not-the-target-file.md
• infra/2026-07-04-dogfooding-a-fresh-checkout-of-a-db-backed-app-needs-regen-migrate-restart.md

Test plan

• tools/strata/scrub.py run on each paraphrased file — SCRUB CLEAN
• tools/strata/scrub.py run on each raw LEARNINGS.md source excerpt — SCRUB CLEAN
• Grepped proj-strata corpus per entry for near-duplicate coverage before writing
• Operator review + merge (draft — not to be merged by an agent)