v0.4.0-alpha.15

What's Changed

• docs(ga): mark G5 PASS after alpha.14 link seal by @whshang in #102
• docs: add browser extension development and store release plan by @whshang in #101
• feat(skill): add modular progressive skills by @whshang in #103
• feat(doctor): bounded credential-free Edge remote probes by @whshang in #106
• feat(updater): honor update.channel in discovery by @whshang in #105
• docs(ga): Release binary primary install + G22 honesty by @whshang in #104
• docs(ga): refresh scorecard after doctor/channel/G22 merges by @whshang in #107
• docs(ga): land G18 clean-machine TMPHOME sim report by @whshang in #108
• feat(extension): Release zip packaging for G15 Decision A by @whshang in #109
• docs(ga): G15 post-pack scorecard honesty by @whshang in #110
• chore(release): prepare Rust alpha.15 by @whshang in #111

Full Changelog: v0.4.0-alpha.14...v0.4.0-alpha.15