Release cf-integration 0.2 with reusable CI orchestration

[lucarlig]

Summary

• bump cf-integration to 0.2.0 for the new cross-repository CI functionality
• move artifact download/image packaging and release recovery out of workflow shell blocks into hidden cf-integration ci commands
• remove stale unpublished tags and draft releases while refusing to overwrite published releases
• support explicit preloaded control-plane and data-plane images without changing default registry refresh behavior
• preserve source builds by applying the Compose build policy only to the selected source component

The published binary now owns the reusable mechanics needed by data-plane CI. Workflows retain only repository-specific configuration.

Verification

• cargo fmt --all --check
• cargo clippy --all-targets --locked -- -D warnings
• cargo test --all-targets --locked (366 passed)
• cargo package --locked --allow-dirty
• go run github.com/rhysd/actionlint/cmd/actionlint@v1.7.12
• git diff --check
• cf-integration --version reports 0.2.0
• live ci prepare-image test downloaded the exact data-plane merge artifact and built its Docker image successfully

CI timing

The latest Rust CI run passed all five checks in 1m38s, compared with 1m34s immediately before this change. The four-second difference is in the Windows runner (94s versus 90s); the quality job improved from 65s to 57s. There is no material CI slowdown.

[Lang-Akshay]

LGTM