refactor(models): bump claude-opus-4-6 to claude-opus-4-7 across fallback chains, categories, and hooks

Updates the canonical Anthropic Opus model in every fallback chain
(sisyphus, oracle, prometheus, metis, momus, visual-engineering,
ultrabrain, deep, artistry, unspecified-high), the unspecified-high
category default, the think-mode HIGH_VARIANT_MAP, the Claude Code
alias map, the claude-thinking legacy alias, the context-limit GA
regex, and event.ts fallback strings.

Widens supportsCachedAnthropicLimit to accept both claude-*-4-6 and
claude-*-4-7 so the 1M context cache still applies across the bump.

Regenerates the bundled model-capabilities snapshot from models.dev
and the model-fallback snapshot to match the new source output.

src/shared/model-capabilities.test.ts

@@ -16,8 +16,8 @@ describe("getModelCapabilities", () => {
     generatedAt: "2026-03-25T00:00:00.000Z",
     sourceUrl: "https://models.dev/api.json",
     models: {
-      "claude-opus-4-6": {
-        id: "claude-opus-4-6",
+      "claude-opus-4-7": {
+        id: "claude-opus-4-7",
         family: "claude-opus",
         reasoning: true,
         temperature: true,
@@ -66,7 +66,7 @@ describe("getModelCapabilities", () => {
     findProviderModelMetadataSpy = spyOn(connectedProvidersCache, "findProviderModelMetadata").mockReturnValue(undefined)
     const result = getModelCapabilities({
       providerID: "anthropic",
-      modelID: "claude-opus-4-6",
+      modelID: "claude-opus-4-7",
       runtimeModel: {
         variants: {
           low: {},
@@ -78,7 +78,7 @@ describe("getModelCapabilities", () => {
     })
 
     expect(result).toMatchObject({
-      canonicalModelID: "claude-opus-4-6",
+      canonicalModelID: "claude-opus-4-7",
       family: "claude-opus",
       variants: ["low", "medium", "high"],
       supportsThinking: true,
@@ -173,12 +173,12 @@ describe("getModelCapabilities", () => {
     findProviderModelMetadataSpy = spyOn(connectedProvidersCache, "findProviderModelMetadata").mockReturnValue(undefined)
     const result = getModelCapabilities({
       providerID: "anthropic",
-      modelID: "claude-opus-4-6-thinking",
+      modelID: "claude-opus-4-7-thinking",
       bundledSnapshot,
     })
 
     expect(result).toMatchObject({
-      canonicalModelID: "claude-opus-4-6",
+      canonicalModelID: "claude-opus-4-7",
       family: "claude-opus",
       supportsThinking: true,
       supportsTemperature: true,
@@ -247,13 +247,13 @@ describe("getModelCapabilities", () => {
   test("canonicalizes provider-prefixed Claude thinking aliases to bare snapshot IDs", () => {
     const result = getModelCapabilities({
       providerID: "anthropic",
-      modelID: "anthropic/claude-opus-4-6-thinking",
+      modelID: "anthropic/claude-opus-4-7-thinking",
       bundledSnapshot,
     })
 
     expect(result).toMatchObject({
-      requestedModelID: "anthropic/claude-opus-4-6-thinking",
-      canonicalModelID: "claude-opus-4-6",
+      requestedModelID: "anthropic/claude-opus-4-7-thinking",
+      canonicalModelID: "claude-opus-4-7",
       family: "claude-opus",
       supportsThinking: true,
       supportsTemperature: true,