chore: back-merge main → develop after v0.9.0 promote (#266)

[saadqbal]

Reconciles ancestry after the #266develop → main promote so the next promote PR doesn't go CONFLICTING (the recurring release-drift issue — main's promote/merge commits accrue outside develop's ancestry).

• Zero content change: main carries no unique code, only the promote merge commit. Verified the merge tree == origin/main tree == origin/develop tree (90e44961…).
• Brings the promote merge commit into develop's history.

Nothing to test — the working tree is byte-identical to current develop.

🤖 Generated with Claude Code

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Note

Low Risk
No file or behavioral changes; merge commit for branch ancestry only.

Overview
Git-history only: merges main back into develop after the v0.9.0 promote (#266) so the next develop → main promote does not hit recurring ancestry/CONFLICTING drift from promote commits living only on main.

There is no application or config diff—the working tree matches current develop/main (per PR verification). This only adds the promote merge commit to develop's history.

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[LukasWodka]

👋 Heads-up — Code review queue is at 55 / 30

Above the WIP limit. The team convention is to review existing PRs before opening new work.

Open PRs currently in Code review (oldest first):

• averaging-service#181 — feat(weights): normalize-on-read — mixed cycles average instead of rejecting (SEC-03 §8 step 2) · author: @shujaatTracebloc · no reviewer assigned
• averaging-service#182 — feat(weights): averaging writes SafeTensors (TF + PyTorch) — SEC-03 §8 step 4 · author: @shujaatTracebloc · no reviewer assigned
• backend#1079 — feat(global_meta): edge dataset_meta exposure + attributes contract at ingest (#924 G4a) · author: @divyasinghds · no reviewer assigned
• backend#1086 — docs(rfc): SafeTensors weight-format migration — SEC-03 Phase 1 (RFC 0004) · author: @shujaatTracebloc · no reviewer assigned
• backend#1093 — chore(deps): bump django from 5.2.14 to 5.2.15 · author: @dependabot · no reviewer assigned
• backend#1095 — feat(experiment): configurable preprocessing knobs incl. tabular scaler — RFC 0003 L1 + L1b (#1094) · author: @LukasWodka · no reviewer assigned
• backend#1100 — fix(boot): pin SDK install to tracebloc==0.11.2, drop 404 dev line (#1098) · author: @LukasWodka · reviewer: @saqlainsyed007
• backend#1105 — perf(api): query micro-fixes — notifications N+1, cached data_scientist, composite index, sampling (#975) · author: @aptracebloc · no reviewer assigned
• backend#1108 — test(api): CLI response-shape contract fixtures for the 9 CLI endpoints (WS-D.2) · author: @LukasWodka · reviewer: @saadqbal
• cli#300 — chore(release): drop the Homebrew tap job + install.tracebloc.io promise · author: @LukasWodka · reviewer: @saadqbal

Pull from review before opening new work. (This is a nudge from the kanban WIP check, not a block.)