fix(ollama): unify context window handling across discovery, merge, and OpenAI-compat transport (#29205)

* fix(ollama): inject num_ctx for OpenAI-compatible transport

* fix(ollama): discover per-model context and preserve higher limits

* fix(agents): prefer matching provider model for fallback limits

* fix(types): require numeric token limits in provider model merge

* fix(types): accept unknown payload in ollama num_ctx wrapper

* fix(types): simplify ollama settled-result extraction

* config(models): add provider flag for Ollama OpenAI num_ctx injection

* config(schema): allow provider num_ctx injection flag

* config(labels): label provider num_ctx injection flag

* config(help): document provider num_ctx injection flag

* agents(ollama): gate OpenAI num_ctx injection with provider config

* tests(ollama): cover provider num_ctx injection flag behavior

* docs(config): list provider num_ctx injection option

* docs(ollama): document OpenAI num_ctx injection toggle

* docs(config): clarify merge token-limit precedence

* config(help): note merge uses higher model token limits

* fix(ollama): cap /api/show discovery concurrency

* fix(ollama): restrict num_ctx injection to OpenAI compat

* tests(ollama): cover ipv6 and compat num_ctx gating

* fix(ollama): detect remote compat endpoints for ollama-labeled providers

* fix(ollama): cap per-model /api/show lookups to bound discovery load

src/config/zod-schema.core.ts

@@ -232,6 +232,7 @@ export const ModelProviderSchema = z
       .union([z.literal("api-key"), z.literal("aws-sdk"), z.literal("oauth"), z.literal("token")])
       .optional(),
     api: ModelApiSchema.optional(),
+    injectNumCtxForOpenAICompat: z.boolean().optional(),
     headers: z.record(z.string(), z.string()).optional(),
     authHeader: z.boolean().optional(),
     models: z.array(ModelDefinitionSchema),