Suportar carpetes IMAP

[ecarreras]

Ara el reader va directament al inbox però seria útil per comptes compartits que es pogués accedir a un folder en concret de un compte imap

[pilipilisbot]

Implemented in PR #48: #48

Commit: 6a5201f (fix: support configurable IMAP mailboxes)

What changed:

• gab read-imap-once --mailbox now defaults to GITHUB_AGENT_BRIDGE_MAILBOX, matching the systemd reader wrapper.
• IMAP mailbox names with spaces are normalized before imaplib.select, so folders like [Gmail]/All Mail work through the direct CLI path too.
• Operator docs and systemd/env.example now show configuring a dedicated IMAP folder/mailbox for shared accounts.

Validation:

• .venv/bin/python -m pytest tests/test_reader_run.py -q passed
• .venv/bin/python -m pytest -q passed (155 tests)
• git diff --check passed

[pilipilisbot]

Post-merge verification complete for #47.

• Merged via PR fix: support configurable IMAP mailboxes #48: fix: support configurable IMAP mailboxes #48
• Merge commit: 559ac6124873c663bd592b55b27fab5278bae7c2
• Post-merge GitHub Actions passed: tests run 26408974765, release run 26408974747
• Published release: v0.18.6
• Local cleanup is complete for the feature branch; the canonical checkout is clean and currently left on unrelated branch fix-url-priority.