- Add uploadBlob (@21) and downloadBlob (@22) RPCs to Cap'n Proto
schema with SHA-256 content addressing and chunked transfer
- Server blob handler: 256KB chunks, SHA-256 verification on finalize,
.meta JSON sidecar, 50MB size limit, content-addressable storage
- Add FileRef (0x08) AppMessage variant with blob_id, filename,
file_size, mime_type
- /send-file command: read file, compute hash, upload in chunks with
progress display, send FileRef via MLS, MIME auto-detection
- /download command: fetch blob in chunks with progress, verify hash,
save to disk with collision avoidance
- 2 new E2E tests: upload/download round-trip with partial reads,
hash mismatch rejection (14 E2E tests total)
- New error codes: E024-E027 for blob operations
- Fix 3 client panics: replace .unwrap()/.expect() with proper error
handling in rpc.rs (AUTH_CONTEXT lock), repl.rs (pending_member),
and retry.rs (last_err)
- Add --danger-accept-invalid-certs flag with InsecureServerCertVerifier
for development TLS bypass, plus mdBook TLS documentation
- Add CI coverage job (cargo-tarpaulin) and Docker build validation
to GitHub Actions workflow, plus README CI badge
- Add [workspace.lints] config, fix 46 clippy warnings across 8 crates,
zero warnings on all buildable crates
- Update Dockerfile for all 11 workspace members
