chore(release): cut 0.1.31

[Jason Robert (jrob5756)]

Cuts 0.1.31. Previous release: v0.1.30.

Commit audit

All 5 commits in v0.1.30..main were audited; every one has an explicit disposition.

SHA	Subject	PR	Disposition
0554517	ci: give the test step room for the Fleet Manager's suite	#434	Internal — CI timeout-minutes 10→20 and AST-parse caching in test_markup_guards.py; no user-visible change
2a5cf86	fix(fleet): stream history event logs instead of materializing full lists	#438	Fixed — already in changelog (#436)
d8ed6b2	fix(fleet): don't kill a healthy --web-bg run on a run-record write failure	#440	Fixed — already in changelog, 2 entries (#435)
967e5f7	fix(cli): resolve optional-extra install commands and preserve extras on upgrade	#442	Fixed — already in changelog (#441)
992931d	feat(install): diagnose a blocked package index instead of retrying blindly	#439	Added — already in changelog, 3 entries

Changelog

Every user-visible change was already recorded under [Unreleased]; nothing was added or removed on content grounds. This PR:

• promotes [Unreleased] to ## [0.1.31](.../compare/v0.1.30...v0.1.31) - 2026-08-15 and opens a fresh empty [Unreleased] section above it;
• fixes two formatting defects in the promoted section — a missing blank line before ### Fixed, and a stray blank line between two Fixed items (repo style is no blank line between list items).

Release contents in brief:

Added — install scripts now classify a blocked package index and stop retrying into it (with the remedy named and the active index echoed, credentials redacted); an unreachable github.com is told apart from a blocked index; new README section Installing behind a proxy or private package index.

Fixed — a failed run-record write no longer kills a healthy --web-bg run (#435); the run_id format is defined once in conductor.run_id (#435); optional-extra install hints now print a command that works and upgrades preserve your extras (#441); Fleet Manager History streams event logs instead of holding a whole parsed log in memory (#436).

Version and lockfile

• pyproject.toml: 0.1.30 → 0.1.31
• uv.lock: regenerated with uv lock; the only change is the conductor-cli project version. No dependency changes.
• Diff is limited to CHANGELOG.md, pyproject.toml, uv.lock.

Validation

Run in an isolated release worktree off origin/main:

• make check — ruff check, ruff format --check (410 files), ty check src: all clean
• make test — 7213 passed, 54 skipped, 14 deselected in 4:57
• make validate-examples — all example workflows valid (not strictly required; no schema or example changes in range)
• git diff --check clean

After merge

Merging this PR will be followed by tagging the merge commit v0.1.31 and pushing it, which triggers .github/workflows/release.yml to build and publish the GitHub Release with its artifacts. No gh release create is run by hand.