chore(release): prepare Sorting Hat v0.2.0

[tcballard]

Summary

Implements the Sorting Hat v0.2.0 release preparation.

Adds:

• shared release identity 0.2.0 (8) for direct and Store configurations
• outcome-led release notes for controlled destinations, rule preview, and correction-derived proposals
• README commands and distribution status aligned with the v0.2.0 release train

Scope

Included

• bump MARKETING_VERSION from 0.1.1 to 0.2.0
• bump CURRENT_PROJECT_VERSION from 7 to 8
• document the accepted v0.2 product contract and verification evidence
• point the release workflow examples and direct-download status at v0.2.0

Excluded

• signed or notarized binaries; those are produced locally from the merged commit
• GitHub release publication and Homebrew update; those follow artifact verification
• Mac App Store submission, which remains deferred in Issue release(app-store): ship a sandboxed Mac App Store build #29
• product behavior beyond the already-merged Issues feat(review): propose safe rule changes from corrections #39, feat(rules): compile controlled destination variables #40, and feat(rules): preview filing outcomes before activation #41

Product / Architecture Decisions

• Use semantic version 0.2.0 for the requested v0.2 release because the checked-in release contract requires three numeric components.
• Use build 8, immediately following public v0.1.1 build 7.
• Preserve the single release identity shared by direct-download and Store configurations while retaining their different security and update contracts.
• Keep signing keys and notarization credentials local; GitHub receives only finished verified artifacts.

User-Facing Contract

Sorting Hat 0.2.0 adds controlled dynamic destination values, a non-mutating rules preview, and explicit reusable rule proposals after manual corrections. Missing or path-shaped values remain in review, and conflicts are surfaced before activation.

Verification

Ran

• ./script/release_identity.sh --verify 0.2.0 8
• swift build --product SortingHatApp
• v0.2 acceptance suite on merged main: 94 Swift tests passed, including 16 focused rule-contract tests
• hosted macOS 26 CI: passed in 2m17s, including the full Swift suite, generated-project check, packaged app, Finder Action contract, and App Store preflight
• clean scratch test run on this Mac: 91 tests passed; three Vision OCR fixtures hit a machine-specific CRImageReaderError error 1 that did not reproduce in hosted CI

Covered

• release identity consistency
• app product compilation
• controlled destination rendering and fail-closed validation
• preview non-mutation and review outcomes
• duplicate, overlap, ordering, and catch-all proposal checks

Review Path

1. Configuration/Release.xcconfig
2. docs/releases/v0.2.0.md
3. README.md

Notes For Reviewer

After merge, build the exact origin/main commit with ./script/release_candidate.sh 0.2.0 8, verify the notarized ZIP, DMG, signed appcast, and App Store package, then create the owner-reviewable GitHub release draft.