chore: bump version to 0.1.8

[0xKT]

Summary

Bump version from 0.1.7 to 0.1.8. Release commit only touches pyproject.toml and uv.lock (kept in sync via uv lock).

Changes bundled into this release since v0.1.7:

• feat(importer): cold-start import from other AI tools with EverOS HTTP backend (feat(importer): cold-start import from other AI tools with EverOS HTTP backend #170)
• fix(build): pin locked dependency versions in installers (fix(build): pin locked dependency versions in installers #185)
• fix(cli): stop blank api key exiting deep_research prompt (fix(cli): stop blank api key exiting deep_research prompt #184)
• fix: use redirect-free install.ps1 url on windows powershell 5.1 (fix: use redirect-free install.ps1 url on windows powershell 5.1 #182)
• fix(tui): brighten selection highlight for readability (fix(tui): brighten selection highlight for readability #175)
• fix(commitlint): align subject-case with conventional-commits standard (fix(commitlint): align subject-case with conventional-commits standard #187)

Type

• Other

Verification

• Relevant lint / type checks pass locally

python3 scripts/check_commit_messages.py origin/main..HEAD  # exit 0
git diff --stat  # pyproject.toml + uv.lock, 1 line each

Risk

• Backward compatibility considered

Version bump only; no source changes.

Related Issues

N/A