feat(tui): overlay positioning API with CSS-like values

Add OverlayOptions for configurable positioning (anchor, margins, offsets,
percentages). Add OverlayHandle for programmatic visibility control with
hide/setHidden/isHidden. Add visible callback for responsive overlays.

Extension API: ctx.ui.custom() now accepts overlayOptions and onHandle callback.

Examples: overlay-qa-tests.ts (10 test commands), doom-overlay (DOOM at 35 FPS).

packages/ai/src/models.generated.ts

@@ -3643,7 +3643,7 @@ export const MODELS = {
 				cacheWrite: 18.75,
 			},
 			contextWindow: 200000,
-			maxTokens: 4096,
+			maxTokens: 32000,
 		} satisfies Model<"openai-completions">,
 		"anthropic/claude-opus-4.5": {
 			id: "anthropic/claude-opus-4.5",
@@ -3660,7 +3660,7 @@ export const MODELS = {
 				cacheWrite: 6.25,
 			},
 			contextWindow: 200000,
-			maxTokens: 32000,
+			maxTokens: 64000,
 		} satisfies Model<"openai-completions">,
 		"anthropic/claude-sonnet-4": {
 			id: "anthropic/claude-sonnet-4",
@@ -3977,13 +3977,13 @@ export const MODELS = {
 			reasoning: true,
 			input: ["text"],
 			cost: {
-				input: 0.39999999999999997,
-				output: 1.75,
+				input: 0.44999999999999996,
+				output: 2.1500000000000004,
 				cacheRead: 0,
 				cacheWrite: 0,
 			},
-			contextWindow: 163840,
-			maxTokens: 65536,
+			contextWindow: 131072,
+			maxTokens: 32768,
 		} satisfies Model<"openai-completions">,
 		"deepseek/deepseek-r1-distill-llama-70b": {
 			id: "deepseek/deepseek-r1-distill-llama-70b",
@@ -4359,23 +4359,6 @@ export const MODELS = {
 			contextWindow: 256000,
 			maxTokens: 128000,
 		} satisfies Model<"openai-completions">,
-		"kwaipilot/kat-coder-pro:free": {
-			id: "kwaipilot/kat-coder-pro:free",
-			name: "Kwaipilot: KAT-Coder-Pro V1 (free)",
-			api: "openai-completions",
-			provider: "openrouter",
-			baseUrl: "https://openrouter.ai/api/v1",
-			reasoning: false,
-			input: ["text"],
-			cost: {
-				input: 0,
-				output: 0,
-				cacheRead: 0,
-				cacheWrite: 0,
-			},
-			contextWindow: 256000,
-			maxTokens: 128000,
-		} satisfies Model<"openai-completions">,
 		"meta-llama/llama-3-70b-instruct": {
 			id: "meta-llama/llama-3-70b-instruct",
 			name: "Meta: Llama 3 70B Instruct",
@@ -4589,13 +4572,13 @@ export const MODELS = {
 			reasoning: true,
 			input: ["text"],
 			cost: {
-				input: 0.28,
-				output: 1.2,
-				cacheRead: 0.14,
+				input: 0.27,
+				output: 1.12,
+				cacheRead: 0,
 				cacheWrite: 0,
 			},
 			contextWindow: 196608,
-			maxTokens: 4096,
+			maxTokens: 65536,
 		} satisfies Model<"openai-completions">,
 		"mistralai/codestral-2508": {
 			id: "mistralai/codestral-2508",