Files
WeKnora/cli/cmd
nullkey 78f3994112 feat(cli): doc download + upload --recursive
Roadmap items 3-9 (download) and 3-10 (recursive upload).

SDK addition (additive, non-breaking):
- OpenKnowledgeFile(ctx, id) (filename, body io.ReadCloser, err) —
  the new primitive that returns the body as a stream plus the
  server-suggested Content-Disposition filename. The existing path-
  form DownloadKnowledgeFile is now a thin wrapper (also gained
  partial-file-on-error cleanup, a pre-existing bug exposed by the
  reshape).

doc download <id>:
Borrows shape from `gh release download` (positional id, output flag,
`-` sentinel for stdout). Flag names match gh canon verified against
the gh manual: `-O, --output <file>` for destination; `--clobber` for
overwrite control.

- Default: writes to cwd under the server-suggested filename. If the
  server didn't send one, errors with input.missing_flag.
- --output FILE / -O FILE: writes to FILE. Refuses overwrite without
  --clobber.
- --output -: stream to stdout (binary-safe).
- Partial writes on error are cleaned up.

doc upload --recursive <dir> --glob '*.pdf':
NOTE on upstream parity: `gh release upload` does NOT support
--recursive (verified — it takes individual file args only). `aws s3
cp --recursive` does, but uses `--include`/`--exclude` glob pattern
pairs rather than a single `--glob`. weknora's single positive `--glob`
is a deliberate simplification, not a direct mirror of either tool.

- Walks the tree, filters by base-name glob, uploads each match
  sequentially. Per-file line output: OK / FAIL with the underlying
  error. Exit 0 only on full success; on partial failure returns the
  first failure's typed code so callers can branch. Rejects --name
  with --recursive.
- --dry-run lists matches without uploading.
- --json emits {kb_id, uploaded[], failed[]} envelope at completion.

Bugs caught in the post-commit reviewer round:
- SECURITY: server-supplied filename was used in os.Rename without
  sanitization. A malicious / buggy server returning
  "../../etc/shadow" could escape cwd. Now filepath.Base'd; "." / "/"
  / "" rejected. Regression test added.
- Wasted-bytes path eliminated via the SDK reshape: the CLI now
  inspects filename and applies refuseIfExists BEFORE streaming.
  Two-phase temp+rename gone.
- refuseIfExists(path, clobber) helper extracted.
- --json honored in --recursive (uploadOutcome was JSON-tagged but
  the envelope was never emitted).

7 + 7 unit tests for download (+ path-traversal regression) and
recursive upload (+ JSON envelope regression).

Roadmap: 3-9, 3-10.
2026-05-14 10:57:17 +08:00
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