chore: release v0.3.0

[github-actions]

🤖 New release

• ironclaw: 0.2.0 -> 0.3.0 (⚠ API breaking changes)

⚠ ironclaw breaking changes

--- failure constructible_struct_adds_field: externally-constructible struct adds field ---

Description:
A pub struct constructible with a struct literal has a new pub field. Existing struct literals must be updated to include the new field.
        ref: https://doc.rust-lang.org/reference/expressions/struct-expr.html
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/constructible_struct_adds_field.ron

Failed in:
  field NearAiConfig.cheap_model in /tmp/.tmpc14bDl/ironclaw/src/config.rs:393
  field AgentDeps.cheap_llm in /tmp/.tmpc14bDl/ironclaw/src/agent/agent_loop.rs:72

Changelog

0.3.0 - 2026-02-17

Added

• direct api key and cheap model (#116)

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