# SPEC-004 — Image generation

Generation on `image-model` (default `gpt-image-2`), base64 end to
end — no URL downloads, no expiring CDN links in the generation path.
Optional knobs: `image-size` (default 1024x1024), `image-quality`
(passed through only when set). The Leonardo path stays behind
`leonardo-token` until parity is confirmed, then dies. The input
pipeline (attachment cache, vision, edit/remix) is FDB-010 / IMG-10+.

### IMG-01 — Images arrive as base64 buffers (coverage: test)

`draw_openai(description, count)` requests `count` images and returns
a list of decoded image buffers straight from the API response; every
generated image is metered in the ledger (SAF-05).

### IMG-02 — The envelope carries picture_count (coverage: test)

The envelope gains `picture_count` (integer). `post_process` clamps
it to 1..4 and defaults to 1 when absent (legacy history entries,
old-model output). ENV-19's field list is revised accordingly.

### IMG-03 — Multiple images, one message (coverage: test)

`picture_count` images are attached as multiple files to a single
Discord send (the last part when the answer is split, per BEH-06).

### IMG-04 — Legacy image models degrade safely (coverage: test)

When `image-model` is not a `gpt-image-*` model (e.g. `dall-e-3`),
the count is clamped to 1 and `response_format="b64_json"` is
requested explicitly (gpt-image models return base64 natively and
reject the parameter).

### IMG-05 — Picture prompts go to the API untouched (coverage: test)

The translate-before-draw step is deleted: the model's picture prompt
reaches the image API verbatim (current image models handle
Norwegian/German natively). The `translate()` method and its
`fix-model` dependency are gone (closes D-009).