chore(release): v0.20.0 — cwd project auto-scope

[muqsitnawaz]

Pins install.sh to v0.20.0 so curl | bash installs the cwd-project auto-scope.

• VERSION → v0.20.0, EXPECTED_SHA256 → 40e95dd4… (verified: sha256 of linear at this tree matches).
• linear __version__ is already 0.20.0; CHANGELOG [0.20.0] entry present.

After merge: tag v0.20.0 + gh release create with the linear file. Delivers PHNX-3700 (scoping) + the PHNX-3704 consumer switch to view . --json.

[prix-cloud]

Code Reviewer

Verdict: Ready to merge

Build: N/A — single-file Python CLI, no build step required.
Tests: 132/132 passed — 0.025s. All green.

Verification	Result
__version__ in linear	0.20.0 ✓
python3 linear --version	linear-cli 0.20.0 ✓
sha256sum(linear)	40e95dd4c8b55c8442aa8ef61d870fc90d8490453fc544b42b496e47e8d7ec51 — matches new EXPECTED_SHA256 ✓
CHANGELOG.md [0.20.0]	Entry present with correct date (2026-09-01) ✓

Changes that work well

A clean, single-responsibility release PR. The diff is exactly 2 lines in install.sh:

1. Version bump (v0.19.1 → v0.20.0) — matches __version__ in the source and the CHANGELOG.
2. SHA256 update — sha256sum of the linear file on this tree matches the new EXPECTED_SHA256. The hash was verified both via sha256sum linear and a Python hashlib cross-check against a temp copy. The install.sh verify_sha256 function will accept it.

No issues found. The PR correctly pins the installer to v0.20.0 so curl | bash delivers the cwd-project auto-scope feature.

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Reviewed by Code Reviewer — actually ran the tests and verified the binary on this branch.