chore: reconcile current main into develop

[Flow-Fly]

Summary

• Reconcile the complete current main tree at cd62f5cf746d7dc6b93bdd56fbf9c2a334e853f4 into develop from 278b6561ded5c8563909f952c71861a5216dd60a, without reinterpreting or extending released changes.
• Preserve the Release editor, PWA, backend, and observability foundations #418 release snapshot and include every subsequent production update now present on main: build(deps): bump sharp and wrangler #422 (sharp / wrangler), build(deps-dev): bump postcss from 8.5.16 to 8.5.24 #420 (postcss), build(deps-dev): bump fast-uri from 3.1.3 to 3.1.4 #421 (fast-uri lockfile resolution), and fix(shared): preserve empty legacy image payloads #426 (empty legacy image payload compatibility).
• Keep the reconciliation branch tree byte-for-byte identical to current origin/main at head f053e53c5a55e73f530790de62a71d90f1d93b1a.

Linked task issues

• Closes Release reconciliation — sync #418 reviewed fixes back to develop #423

Test plan

• Confirm git diff --exit-code origin/main HEAD succeeds at f053e53c5a55e73f530790de62a71d90f1d93b1a.
• npx tsc --noEmit
• npm run lint (0 errors; 5 existing warnings)
• npm run test:run (112 files, 707 tests, plus shared Node ESM import)
• npm run build
• npm run fallow:audit (no issues in the 4 refreshed files)
• git diff --check
• Added-line residue, secret, binary, filename, and manifest/lock consistency checks

Known repository baseline

• npm run format:check reports the same repo-wide 237-file formatting baseline present on current main. This reconciliation intentionally leaves it unchanged to preserve exact tree parity.

[coderabbitai]

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch dev-423-release-reconciliation

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[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 2b8da765f0

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[Flow-Fly]

Reconciliation is paused after the automatic Codex exact-head review found a valid P1 legacy project compatibility regression already present in current main.

• Hotfix tracked in Preserve empty legacy image payloads when opening projects #425.
• chore: reconcile current main into develop #424 is returned to draft and remains unmerged.
• After Preserve empty legacy image payloads when opening projects #425 merges into main, this branch will be regenerated so its tree again exactly matches corrected production.

[Flow-Fly]

Ready for owner merge

Exact reviewed head: f053e53c5a55e73f530790de62a71d90f1d93b1a

• Complete tree is byte-for-byte identical to current main at cd62f5cf746d7dc6b93bdd56fbf9c2a334e853f4.
• CI, server-container, and CodeRabbit status are green.
• Automatic Codex review completed clean on the refreshed head.
• Independent Terra exact-head review: APPROVE, no findings.
• Former legacy empty-image P1 is fixed by merged fix(shared): preserve empty legacy image payloads #426, covered by regression tests, and its thread is resolved.
• No unresolved review threads remain.

This PR is ready for the project owner to merge into develop. After merge, issue #423 can be reconciled/closed and delivery can proceed to #383.