docs(claude): sync org-standards block (backend#1602)

[LukasWodka]

Managed sync of the org-standards block into this repo's CLAUDE.md — canonical
source: tracebloc/.github/org-standards.md. Do not hand-edit the block; to change
a rule, open a PR against tracebloc/.github and the sync propagates it.

Part of tracebloc/backend#1602 (org-wide engineering standards).

🤖 Generated with Claude Code

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Note

Low Risk
Documentation-only; no runtime, auth, or data-path changes.

Overview
Adds CLAUDE.md so Claude Code sessions have a home for repo-specific notes (build/test, architecture, default reviewer) and the org-wide engineering standards rollout (backend#1602).

The managed block between org-standards:begin / end is copied from tracebloc/.github/org-standards.md and must not be edited in this repo—policy changes go through tracebloc/.github. The synced prose covers branches/PRs, quality bar, kanban/FR, release train, issue filing, and AI session guardrails.

^{Reviewed by Cursor Bugbot for commit 72a16ca. Bugbot is set up for automated code reviews on this repo. Configure here.}

[aptracebloc]

Approving — faithful, byte-identical sync of the canonical org-standards block (verified against backend#1611 / the 18-repo hash set). Docs-only, no drift.

[aptracebloc]

Re-approving after the 2026-08-10 re-sync push (which dismissed the prior approval). Verified: the resulting org-standards block is byte-identical across all 16 PRs (hash 9184cd) and carries the backend#1409 PII-gate-retirement propagation. Clean, consistent re-sync of the current canonical.