release: v1.21.2

[Desperado]

Version bump + CHANGELOG for the v1.21.2 patch release.

• Bumps version to 1.21.2
• Adds missing CHANGELOG entries for 1.21.0, 1.21.1, and 1.21.2
• Tag will follow after merge

[sigilix]

Sigilix Overview

Effort: 1/5 (trivial)

Quality gates

• ⚠️ PR title follows convention — Title doesn't match repo convention: ^(?:feat|fix|chore|docs|refactor|test|perf|style|build|ci|revert)(?:\([^)]+\))?!?: .+
• ✅ PR description is complete
• ℹ️ PR is linked to an issue — No Closes #N / Closes SIG-N keyword found in PR body or commit messages.

Summary — latest push

Bumps the binary version constant from 1.20.9 to 1.21.2 and backfills the CHANGELOG with entries for 1.21.0, 1.21.1, and 1.21.2. The CHANGELOG documents the Exposure Receipt feature (QUA-1316) and two input-handling fixes: a space-dropping bug in the turn-running viewport and an input panel displacement bug during streamed output.

Important files

File	Score	Notes	Next step
main.go	1/5	Updates the Version variable from "1.20.9" to "1.21.2" to match the new release tag.	Verify the CI pipeline passes the correct -ldflags to ensure the build overrides this constant as intended.
CHANGELOG.md	1/5	Adds three missing release entries (1.21.0, 1.21.1, 1.21.2) documenting the new Exposure Receipt feature and two input bug fixes.	Confirm the issue numbers (#149, #150, #151, #152, #153, #154) and the QUA-1316 reference accurately match their corresponding pull requests and tickets.

Confidence: 5/5

Mechanical version bump and documentation update with no behavior changes to runtime code.

• Ensure the tag v1.21.2 is pushed immediately after merge to match the declared version.

Suggested labels: release

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