refactor(agents): Add "max" to all codebase reasoning enums accordingly

src/config/schema/agent-overrides.ts

@@ -35,7 +35,7 @@ export const AgentOverrideConfigSchema = z.object({
     })
     .optional(),
   /** Reasoning effort level (OpenAI). Overrides category and default settings. */
-  reasoningEffort: z.enum(["none", "minimal", "low", "medium", "high", "xhigh"]).optional(),
+  reasoningEffort: z.enum(["none", "minimal", "low", "medium", "high", "xhigh", "max"]).optional(),
   /** Text verbosity level. */
   textVerbosity: z.enum(["low", "medium", "high"]).optional(),
   /** Provider-specific options. Passed directly to OpenCode SDK. */

src/config/schema/categories.ts

@@ -16,7 +16,7 @@ export const CategoryConfigSchema = z.object({
       budgetTokens: z.number().optional(),
     })
     .optional(),
-  reasoningEffort: z.enum(["none", "minimal", "low", "medium", "high", "xhigh"]).optional(),
+  reasoningEffort: z.enum(["none", "minimal", "low", "medium", "high", "xhigh", "max"]).optional(),
   textVerbosity: z.enum(["low", "medium", "high"]).optional(),
   tools: z.record(z.string(), z.boolean()).optional(),
   prompt_append: z.string().optional(),

src/config/schema/fallback-models.ts

@@ -3,7 +3,7 @@ import { z } from "zod"
 export const FallbackModelObjectSchema = z.object({
   model: z.string(),
   variant: z.string().optional(),
-  reasoningEffort: z.enum(["none", "minimal", "low", "medium", "high", "xhigh"]).optional(),
+  reasoningEffort: z.enum(["none", "minimal", "low", "medium", "high", "xhigh", "max"]).optional(),
   temperature: z.number().min(0).max(2).optional(),
   top_p: z.number().min(0).max(1).optional(),
   maxTokens: z.number().optional(),

src/shared/model-capability-heuristics.ts

@@ -32,7 +32,7 @@ export const HEURISTIC_MODEL_FAMILY_REGISTRY: ReadonlyArray<HeuristicModelFamily
     family: "gpt-5",
     includes: ["gpt-5"],
     variants: ["low", "medium", "high", "xhigh"],
-    reasoningEfforts: ["none", "minimal", "low", "medium", "high", "xhigh"],
+    reasoningEfforts: ["none", "minimal", "low", "medium", "high", "xhigh", "max"],
   },
   {
     family: "gpt-legacy",

src/shared/model-settings-compatibility.ts

@@ -32,10 +32,10 @@ export type ModelSettingsCompatibilityChange = {
   from: string
   to?: string
   reason:
-    | "unsupported-by-model-family"
+  | "unsupported-by-model-family"
-    | "unknown-model-family"
+  | "unknown-model-family"
-    | "unsupported-by-model-metadata"
+  | "unsupported-by-model-metadata"
-    | "max-output-limit"
+  | "max-output-limit"
 }
 
 export type ModelSettingsCompatibilityResult = {
@@ -49,7 +49,7 @@ export type ModelSettingsCompatibilityResult = {
 }
 
 const VARIANT_LADDER = ["low", "medium", "high", "xhigh", "max"]
-const REASONING_LADDER = ["none", "minimal", "low", "medium", "high", "xhigh"]
+const REASONING_LADDER = ["none", "minimal", "low", "medium", "high", "xhigh", "max"]
 
 function downgradeWithinLadder(value: string, allowed: string[], ladder: string[]): string | undefined {
   const requestedIndex = ladder.indexOf(value)