Three-layer defect chain causing 'cannot identify image file <_io.BytesIO object>':
1. attachmentUploader: hardcoded 'application/octet-stream' on Tele CDN upload
regardless of actual file MIME type — CDN stored images under wrong type.
2. messageCapture: processAttachmentUpload call site never forwarded
attachment.contentType into the options bag, so the fix in (1) would
have received undefined and fallen back to octet-stream anyway.
3. llmModerationClient: blindly trusted att.type from the DB record
(Discord-provided MIME) when constructing data: URLs, but validated
neither the HTTP status of the CDN re-fetch nor the actual byte content.
Stale/expired CDN URLs returning HTML error pages were base64-encoded
and sent to the model as 'image/jpeg', causing PIL to reject the stream.
Fixes:
- uploadAttachmentToTele now accepts contentType param (defaults to
application/octet-stream for non-image files)
- processAttachmentUpload options bag gains optional contentType field
- messageCapture forwards attachment.contentType at the call site
- Added sniffImageMimeType() using magic-byte probes for JPEG, PNG, GIF,
WebP, AVIF/HEIF — runs on every downloaded attachment buffer before
base64 encoding; skips the attachment (logs headerHex for diagnosis)
if bytes don't match a known image format
- data: URL now uses the sniffed MIME type, not the DB record
- Changed all import statements across the project to include the .js extension for consistency and to comply with ES module standards.
- Updated imports in various files including bootstrap.ts, shutdown.ts, config.ts, and many others.
- Ensured that all related modules and types are correctly imported with the new extension.
- Added `vendor/discord-video-stream` to pnpm workspace.
- Refactored `llmModerationClient.ts` for better readability and consistency.
- Adjusted imports in `recordingsRoutes.ts` for clarity.
- Updated `webserver.ts` to correctly import `createRecordingsRoutes`.
- Enhanced test cases in `llmModerationClient.test.ts` for improved readability.
- Updated submodule references for `better-sqlite3`, `discord-video-stream`, `discord.js-selfbot-v13`, `drizzle-orm`, and `node-datachannel`.
- Created documentation for deprecated dependency removal plan and design.
MythEclipse