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multica/packages
Bohan Jiang d14265de2a fix(comments): preserve newlines from agent CLI writes (#1744)
* fix(comments): preserve newlines from agent CLI writes

Agents (e.g. Codex) routinely emit `multica issue comment add --content
"para1\n\npara2"` because Python/JSON-style string literals are their
default. Bash does not expand `\n` inside double quotes, so the literal
4-char sequence flowed through the CLI into the database and rendered
as text in the issue panel — comments came out as one wall of prose.

Three coordinated fixes so the platform behavior no longer depends on
whether a given model has strong bash-quoting intuition:

- CLI: decode `\n / \r / \t / \\` in `--content` and `--description` for
  `issue create / update / comment add` (callers needing a literal
  backslash still have `--content-stdin`).
- Agent prompt: rewrite the comment-add example in the injected runtime
  config to require `--content-stdin` + HEREDOC for any multi-line body,
  and call out the same rule for `--description`. The previous wording
  flagged stdin only for "backticks, quotes", which models read as
  irrelevant to plain paragraphs.
- Renderer: add `remark-breaks` to the shared Markdown plugin chain so a
  bare `\n` becomes a visible line break instead of a CommonMark soft
  break — protects against models that emit single newlines for
  formatting.

Tests: pin the new CLI helper, and pin the runtime-config guidance so
the multi-line wording cannot decay back into a footnote.

* fix(comments): address review feedback on newline-rendering PR

- Cover the issue panel: ReadonlyContent (used by every comment card and
  the issue description) has its own react-markdown wiring; add
  remark-breaks there too so the renderer fix actually applies to the
  surface the bug was reported on, not just the chat panel. Pinned by
  ReadonlyContent line-break tests.
- Make the prompt's `--description` guidance executable: add
  `--description-stdin` to `issue create` / `issue update`, refactor
  comment-add to share a single `resolveTextFlag` helper, and have the
  injected runtime config name the real flag instead of an imaginary
  "stdin / a tempfile" path. Pinned by the runtime-config guidance test.
- Document the unescape contract on each affected flag's help text and
  pin the precise boundary in tests: `\n / \r / \t / \\` are decoded;
  `\d / \w / \s / \u / \0` and other unrecognised escapes pass through
  verbatim, so regex literals and Windows paths survive intact unless
  they embed a literal `\n` / `\r` / `\t`. Callers that need the literal
  sequence have `--content-stdin` / `--description-stdin` as the escape
  hatch.
2026-04-27 17:17:34 +08:00
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