fix(model-capabilities): bundle gpt-5.4-mini-fast caps

Keep the supplemental OpenAI model available when the bundled snapshot omits it.\nMerge its capabilities at runtime so downstream model resolution can use it.

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/shared/model-capabilities/supplemental-entries.ts

@@ -0,0 +1,20 @@
+import type { ModelCapabilitiesSnapshotEntry } from "./types"
+
+export const SUPPLEMENTAL_MODEL_CAPABILITIES: Record<string, ModelCapabilitiesSnapshotEntry> = {
+	"gpt-5.4-mini-fast": {
+		id: "gpt-5.4-mini-fast",
+		family: "gpt-mini",
+		reasoning: true,
+		temperature: false,
+		toolCall: true,
+		modalities: {
+			input: ["text", "image", "pdf"],
+			output: ["text"],
+		},
+		limit: {
+			context: 400000,
+			input: 272000,
+			output: 128000,
+		},
+	},
+}