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# DECISIONS.md — ADR log
Decisions inside the set architecture. D-NNN, never renumbered.
- **D-001** — SDD+BDD+TDD adopted (2026-07-13). SPEC-system port:
numbered requirements in `specs/`, coverage classes
feature/test/manual, `tools/trace.py` enforcement in `make check`.
Process is binding — see SPEC-000.
- **D-002** — BDD runs at the responder seam, not against live
services. `FakeModelResponder` scripts model output; Discord-event
behavior is unit-tested with mocked discord.py objects. Rationale:
Discord ToS forbids test-account automation and LLM output is
nondeterministic — a live-BDD lane would be flaky by construction.
- **D-003** — Packaging = uv + pyproject only (2026-07-13). setup.py,
requirements.txt and pytest.ini removed; single source of truth,
locked via uv.lock. Python `>=3.11` floor keeps the kitchen host
(py3.11) deployable until FDB-016 lands.
- **D-004** — openai SDK pinned `<2` (1.109.x). The v2 SDK migration
happens together with the FDB-005 envelope rewrite (structured
outputs / Responses API) — one breaking change, one test cycle,
instead of two.
- **D-005** — `--strict-markers` stays on; requirement tags from
`.feature` files are registered as pytest markers dynamically in
`tests/conftest.py`.
- **D-006** — FDB-005 stays on chat.completions + structured outputs;
the Responses API migration is deferred to FDB-007, where history
handling gets redesigned anyway — one conversation-state reshape
instead of two.
- **D-007** — openai SDK bumped to 2.x together with the envelope
rewrite (supersedes the D-004 pin). `multiline` dependency dropped —
strict schema output made relaxed-JSON parsing dead code.
- **D-008** — Operator runtime flags (pause/images/tasks/quiet) are
in-memory only; a restart resets to config defaults. Persistence
arrives with the FDB-011 task store if staff practice demands it.
- **D-009** — `translate()` still keys off `fix-model` although the
repair path is gone; the whole translate-before-draw step dies in
FDB-009 (gpt-image-2 is multilingual). Not worth a config rename
for one phase.
- **D-010** — Persistence uses stdlib `sqlite3` via
`asyncio.to_thread`, not aiosqlite: no new dependency, and a
connection-per-operation with WAL is plenty at this message volume.
- **D-011** — `save_history` replaces the channel's rows wholesale
per message instead of appending: histories are capped at
`history-limit` (~200-350 rows) and trims must be reflected;
correctness over micro-optimization.
- **D-012** — Budget spend is *estimated* from configured per-token/
per-image prices, not fetched from the billing API: deterministic,
testable, no extra scopes. Dashboard hard limits (FDB-001) stay the
outer safety net; this ledger is the inner, immediate one. User
image quota counts at grant time (reservation), global image spend
at generation time.
- **D-013** — `!forgetme` v1 purges history rows only; the
single-string channel memory cannot be selectively cleaned. Full
fact-level erasure ships with FDB-007 structured memory — stated in
the user-facing confirmation, not hidden.