v0.260531.0-rc4

What's Changed

• refactor(protocol, harness): Make Anthropic Beta the single normalization target for non-Anthropic sources by @0x0079 in #977
• bugfix(server): rule override should be first level upon provider endpoint config. by @FFengIll in #979
• refactor: rename, file separate and code clean without logic change. by @FFengIll in #980
• bugfix(db): missing OpenAIEndpointMode field to provider storage and migration by @0x0079 in #981
• Sanitize Codex input item IDs in JSON to prevent backend rejection by @0x0079 in #978
• refactor: Extract server lifecycle and API handlers into separate files without logic change. by @0x0079 in #983
• refactor(server): move cursor_compat into the transform chain by @0x0079 in #984
• Make database authoritative for providers, clear legacy JSON config by @0x0079 in #985
• perf(UI): Move zen mode menu from activity bar to layout header by @0x0079 in #986
• feat(UI): Add Claude theme support with Anthropic brand styling by @0x0079 in #987
• bugfix(client): codex client method missing for nonstream by @FFengIll in #982
• bugfix(migration): codex openai endpoint migration error. by @FFengIll in #991
• security: generate random tokens instead of using well-known defaults by @0x0079 in #989
• feat(UI/UX, agent): Add Claude Code quick-config UI with preferences-based apply by @0x0079 in #988
• Refactor(CLI): split provider and rule management into subcommands by @0x0079 in #993

Full Changelog: v0.260531.0-rc3...v0.260531.0-rc4