chore: update OpenAPI spec from monorepo (#730)

Co-authored-by: OpenRouter SDK Bot <sdk-bot@openrouter.ai>

Author: openrouter-docs-sync[bot]

.speakeasy/in.openapi.yaml

@@ -9057,7 +9057,7 @@ components:
         model: '~anthropic/claude-opus-latest'
       properties:
         analysis_models:
-          description: 'Slugs of models to run in parallel as the "expert panel" the analyst analyzes. Each model receives the same user prompt with web_search + web_fetch enabled. Capped at 8 models to bound cost amplification. When omitted, defaults to the Quality preset from the /labs/fusion UI (~anthropic/claude-opus-latest, ~openai/gpt-latest, ~google/gemini-pro-latest).'
+          description: 'For a Fusion run started by the `openrouter/fusion` model slug or `openrouter:fusion` server tool, slugs of models to run in parallel as the "expert panel" the analyst analyzes. Each model receives the same user prompt with web_search + web_fetch enabled. Capped at 8 models to bound cost amplification. When omitted, defaults to the Quality preset from the /labs/fusion UI (~anthropic/claude-opus-latest, ~openai/gpt-latest, ~google/gemini-pro-latest).'
           example:
             - '~anthropic/claude-opus-latest'
             - '~openai/gpt-latest'
@@ -9068,32 +9068,32 @@ components:
           minItems: 1
           type: 'array'
         enabled:
-          description: 'Set to false to disable the fusion plugin for this request. Defaults to true.'
+          description: 'Set to false to disable Fusion configuration for a run started by the `openrouter/fusion` model slug or `openrouter:fusion` server tool. Defaults to true.'
           type: 'boolean'
         id:
           enum:
             - 'fusion'
           type: 'string'
         max_tool_calls:
-          description: 'Maximum number of tool-calling steps each panelist (analysis model) and the analyst model may take during their agentic web-research loop. Models with web_search/web_fetch enabled iterate until they produce a text response or hit this ceiling. Defaults to 4. Capped at 16.'
+          description: 'For a Fusion run started by the `openrouter/fusion` model slug or `openrouter:fusion` server tool, the maximum number of tool-calling steps each panelist (analysis model) and the analyst model may take during their agentic web-research loop. Models with web_search/web_fetch enabled iterate until they produce a text response or hit this ceiling. Defaults to 4. Capped at 16.'
           example: 12
           maximum: 16
           minimum: 1
           type: 'integer'
         model:
-          description: 'Slug of the model that performs both the analyst step (with web_search + web_fetch) and the final synthesis. When omitted, defaults to the first model in the Quality preset.'
+          description: 'For a Fusion run started by the `openrouter/fusion` model slug or `openrouter:fusion` server tool, the slug of the model that performs both the analyst step (with web_search + web_fetch) and the final synthesis. When omitted, defaults to the first model in the Quality preset.'
           example: '~anthropic/claude-opus-latest'
           type: 'string'
         preset:
-          description: 'A curated OpenRouter fusion preset (slugs follow `<task>-<tier>`, e.g. `general-high`). Expands server-side into the preset''s analysis_models panel and analyst model, so callers never name individual models. Explicitly provided `analysis_models` / `model` take precedence.'
+          description: 'Configuration for a Fusion run started by the `openrouter/fusion` model slug or `openrouter:fusion` server tool. A curated OpenRouter preset (slugs follow `<task>-<tier>`, e.g. `general-high`). Expands server-side into the preset''s analysis_models panel and analyst model, so callers never name individual models. Explicitly provided `analysis_models` / `model` take precedence.'
           enum:
             - 'general-high'
             - 'general-budget'
             - 'general-fast'
           example: 'general-high'
           type: 'string'
         tools:
-          description: 'Server tools available to panelist and analyst inner calls. Each entry uses the same `{ type, parameters? }` shorthand as the outer Chat Completions request. When omitted, defaults to `[{ type: "openrouter:web_search" }, { type: "openrouter:web_fetch" }]`. Pass an empty array to disable tools entirely (panelists answer from parametric knowledge only).'
+          description: 'For a Fusion run started by the `openrouter/fusion` model slug or `openrouter:fusion` server tool, server tools available to panelist and analyst inner calls. Each entry uses the same `{ type, parameters? }` shorthand as the outer Chat Completions request. When omitted, defaults to `[{ type: "openrouter:web_search" }, { type: "openrouter:web_fetch" }]`. Pass an empty array to disable tools entirely (panelists answer from parametric knowledge only).'
           example:
             - parameters:
                 excluded_domains: