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Stamp UTC on naive API timestamps before serializing (B-35)

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SQLite/aiosqlite returns DateTime columns as naive even though every
value is written in UTC, so a bare .isoformat() dropped the offset and
the frontend's new Date() parsed it as local time. Add a shared
isoformat_utc() helper and use it at every call site that was missing
the fix already applied ad hoc in rounds.py.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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davide
2026-07-27 12:20:22 +02:00
co-authored by Claude Sonnet 5
parent 739fc9fed2
commit bb8b71278a
7 changed files with 70 additions and 30 deletions
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CLAUDE.md
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@@ -12,7 +12,7 @@ All 10 stages of the original build order are code-complete and unit-tested —
Verified on mainnet with real money: registration + address derivation, deposit crediting (1-conf), a real 10 PLM bet (broadcast → confirmed → change credited back), and one full round cycle (close → draw on a real block hash → 70/30 payout with sat math checked against the broadcast tx → confirmation → close → next round auto-opened). **Withdrawal and the RBF bump path have never been exercised against a live broadcast** — unit-tested only.
**Read [BUGS.md](BUGS.md) before trusting any behaviour here.** Two audits: 2026-07-26 found 24 bugs (5 critical), all fixed; 2026-07-27 found 25 more (B-32 … B-49), of which **18 are still open** — no Critical, but High covers an RBF bump that can loop forever on a replacement the node always rejects (B-32), no brute-force protection on login (B-33), and password change/reset not invalidating existing JWTs (B-34). BUGS.md is the live open list with a proposed fix per finding; "Known gaps" at the end of this file is for limitations accepted **by design** instead. Don't fix a BUGS.md item silently as a side effect of other work — each fix lands with its own regression test.
**Read [BUGS.md](BUGS.md) before trusting any behaviour here.** Two audits: 2026-07-26 found 24 bugs (5 critical), all fixed; 2026-07-27 found 25 more (B-25 … B-49), of which **14 are still open** — no Critical or High remains, only Medium/Low: `_wait_for_next_block` has no timeout or visibility if a round gets stuck in `drawing` (B-36), no WAL/`busy_timeout` under five concurrent SQLite writer tasks (B-39), among others. BUGS.md is the live open list with a proposed fix per finding; "Known gaps" at the end of this file is for limitations accepted **by design** instead. Don't fix a BUGS.md item silently as a side effect of other work — each fix lands with its own regression test.
Before writing code, read the "Architecture" section below in full plus the diagrams in [flowchart/](flowchart/): [platform-overview.mmd](flowchart/platform-overview.mmd) (the 5-phase flow) and [round-lifecycle.mmd](flowchart/round-lifecycle.mmd) (the round/draw lifecycle). Every node **and edge label** (conditions, retries, loops) is a behaviour that must be implemented as described. Regenerate the companion PDFs with `flowchart/render-pdf.sh <file>.mmd` after editing either.