chore(main): release 0.3.0

[github-actions]

🤖 I have created a release beep boop

0.3.0 (2026-07-30)

⚠ BREAKING CHANGES

• the UDS usage frame no longer carries cost_usd, and ProtocolVersion is 2. JSON decoding tolerates the absent field, which is precisely the hazard: a v1 client would keep its cost cell and read the missing field as $0.0000. Gating the skew turns that silent wrong figure into "update the argus binary". Also removed: daemon.Context.Pricing, the cost argument on daemon.RunCallbacks.OnUsage, the third return value of daemon.Session.Usage(), tui.Model.CostUSD(), and tui.AgentUsageMsg.CostUSD.

Features

• an OpenAI-compatible LLM Provider (#78) (fe74b79)
• config v2 with codehosts/channels split and HTTP front door (#59) (43e47a5)
• github: address Argus by bare-name vocative instead of @argus (#61) (8eb4d64)
• guided SOUL onboarding, richer SOUL schema, inline terminal UI (#48) (0ea3e90)

Bug Fixes

• init: ask the instance name in the provider form so it is never skipped (#60) (90f2fc1)

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[argusappsecuritybot]

🛡️ Argus security review

No security findings.

[github-actions]

🤖 Created releases:

• v0.3.0

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