Address review: document all preset env vars + fix config-naming wording

- arguments: add the 4 advertised preset env vars (OPENROUTER_FUSION_
  RESEARCHECO / MATHS / MEDECINE / CODE) with examples, so the manifest's
  configuration docs match its description (Qodo/Copilot).
- Clarify OPENROUTER_FUSION_<SUFFIX>: the config name comes from the JSON
  `name` field (e.g. research-eco), not the lowercased suffix (Copilot).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: tboome33

mcp-registry/servers/openrouter-fusion.json

@@ -66,10 +66,30 @@
       "example": "sk-or-v1-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
     },
     "OPENROUTER_FUSION_RESEARCH": {
-      "description": "Optional. A named custom config, as a JSON object. One env var per config: OPENROUTER_FUSION_<NAME> registers a config named <name>. Built-in configs 'quality' and 'budget' need no env var. Fields: analysis_models (panel), judge (orchestrator), reasoning_effort (xhigh|high|medium|low|minimal|none), temperature (null = model default), max_tool_calls (1-16, caps the web loop; default 8), optional system. More ready-made presets (research-eco, maths, medecine, code) are in the repo's fusion-env-vars.json.",
+      "description": "Optional. A named custom config, as a JSON object. One env var per config: OPENROUTER_FUSION_<SUFFIX>; the config name comes from the JSON `name` field (e.g. \"research-eco\"), falling back to the lowercased suffix. Built-in configs 'quality' and 'budget' need no env var. Fields: analysis_models (panel), judge (orchestrator), reasoning_effort (xhigh|high|medium|low|minimal|none), temperature (null = model default), max_tool_calls (1-16, caps the web loop; default 8), optional system. More ready-made presets (research-eco, maths, medecine, code) are in the repo's fusion-env-vars.json.",
       "required": false,
       "example": "{\"name\":\"research\",\"analysis_models\":[\"~anthropic/claude-opus-latest\",\"openai/gpt-5.5\",\"~google/gemini-pro-latest\",\"deepseek/deepseek-v4-pro\"],\"judge\":\"~anthropic/claude-opus-latest\",\"reasoning_effort\":\"high\",\"temperature\":null,\"max_tool_calls\":8}"
     },
+    "OPENROUTER_FUSION_RESEARCHECO": {
+      "description": "Optional. Ready-made \"research-eco\" preset (cheaper panel, Opus judge). Same field shape as OPENROUTER_FUSION_RESEARCH; full paste-ready value in the repo's fusion-env-vars.json.",
+      "required": false,
+      "example": "{\"name\":\"research-eco\",\"analysis_models\":[\"~google/gemini-flash-latest\",\"~moonshotai/kimi-latest\",\"deepseek/deepseek-v4-pro\"],\"judge\":\"~anthropic/claude-opus-latest\",\"reasoning_effort\":\"high\",\"temperature\":null,\"max_tool_calls\":8}"
+    },
+    "OPENROUTER_FUSION_MATHS": {
+      "description": "Optional. Ready-made \"maths\" preset (diverse reasoner panel, xhigh effort). Full value incl. system prompt in fusion-env-vars.json.",
+      "required": false,
+      "example": "{\"name\":\"maths\",\"analysis_models\":[\"openai/gpt-5.5\",\"~google/gemini-pro-latest\",\"deepseek/deepseek-v4-pro\",\"z-ai/glm-5.2\"],\"judge\":\"~anthropic/claude-opus-latest\",\"reasoning_effort\":\"xhigh\",\"temperature\":null,\"max_tool_calls\":8}"
+    },
+    "OPENROUTER_FUSION_MEDECINE": {
+      "description": "Optional. Ready-made \"medecine\" preset (French clinical-reasoning aid, cautious Opus judge - decision support, not a diagnosis). Full value incl. system prompt in fusion-env-vars.json.",
+      "required": false,
+      "example": "{\"name\":\"medecine\",\"analysis_models\":[\"~anthropic/claude-opus-latest\",\"openai/gpt-5.5\",\"~google/gemini-pro-latest\"],\"judge\":\"~anthropic/claude-opus-latest\",\"reasoning_effort\":\"high\",\"temperature\":null,\"max_tool_calls\":8}"
+    },
+    "OPENROUTER_FUSION_CODE": {
+      "description": "Optional. Ready-made \"code\" preset (architecture/review, not raw code generation). Full value incl. system prompt in fusion-env-vars.json.",
+      "required": false,
+      "example": "{\"name\":\"code\",\"analysis_models\":[\"openai/gpt-5.5\",\"~anthropic/claude-opus-latest\",\"deepseek/deepseek-v4-pro\",\"z-ai/glm-5.2\"],\"judge\":\"~anthropic/claude-opus-latest\",\"reasoning_effort\":\"high\",\"temperature\":null,\"max_tool_calls\":8}"
+    },
     "OPENROUTER_FUSION_DEFAULT_REASONING": {
       "description": "Optional. Global default reasoning effort applied to any config that doesn't set its own. Defaults to 'high'.",
       "required": false,