Add Agnes 3.0 Flash and Agnes 2.5 Pro Beta, remove Agnes 2.5 Pro Alpha and Agnes 2.0 Flash

[danissimo888]

Adds two new Agnes models and removes two that are no longer served.

Added:

• Agnes 3.0 Flash (agnes-3.0-flash). New text model for agentic coding, tool orchestration, and reliable delivery. 512K context, 65,536 max output, text and image input, reasoning toggle via enable_thinking. AA Intelligence Index: 36.
• Agnes 2.5 Pro Beta (agnes-2.5-pro-beta). Paid reasoning model for advanced coding, scientific reasoning, and long-context analysis. 1M context, 65,536 max output, text and image input. AA Intelligence Index: 35.

Removed:

• Agnes 2.5 Pro Alpha, superseded by Agnes 2.5 Pro Beta.
• Agnes 2.0 Flash, superseded by Agnes 3.0 Flash.

Sources:

• Agnes 3.0 Flash docs: https://agnes-ai.com/en/docs/agnes-30-flash
• Agnes 2.5 Pro Beta docs: https://agnes-ai.com/en/docs/agnes-25-pro-beta
• Artificial Analysis: https://artificialanalysis.ai/models/agnes-3-0-flash
• Artificial Analysis: https://artificialanalysis.ai/models/agnes-2-5-pro-beta

[github-actions]

Action items

• [medium] [violation] providers/agnes/models/agnes-3.0-flash.toml:1 - Check: Every reasoning_options toggle must have a leading top-of-file wire-path comment. Why: reasoning = true with type = "toggle" only documents the API mid-file (# API: {"chat_template_kwargs": {"enable_thinking": true}}). AGENTS.md requires the exact toggle wire path above the first key so it survives sync and is discoverable. Action: Add a leading comment such as # Toggle: chat_template_kwargs.enable_thinking = true|false before the first key (keep or drop the mid-file note).
• [medium] [violation] providers/agnes/models/agnes-2.5-pro-beta.toml:1 - Check: Every reasoning_options toggle must have a leading top-of-file wire-path comment. Why: Same gap as 3.0 Flash: toggle is present but the wire path is only an inline mid-file comment, which violates the reasoning-options policy. Action: Add a leading top-of-file toggle wire comment (e.g. # Toggle: chat_template_kwargs.enable_thinking = true|false) before the first key.