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/cli/config-manager/generate-omo-config.test.ts

@@ -26,8 +26,8 @@ describe("generateOmoConfig - model fallback system", () => {
 
     //#then
     expect([
-      "github-copilot/claude-opus-4.6",
-      "github-copilot/claude-opus-4-6",
+      "github-copilot/claude-opus-4.7",
+      "github-copilot/claude-opus-4-7",
     ]).toContain((result.agents as Record<string, { model: string }>).sisyphus.model)
   })
 
@@ -74,7 +74,7 @@ describe("generateOmoConfig - model fallback system", () => {
 
     //#then
     expect((result.agents as Record<string, { model: string }>).librarian.model).toBe("zai-coding-plan/glm-4.7")
-    expect((result.agents as Record<string, { model: string }>).sisyphus.model).toBe("anthropic/claude-opus-4-6")
+    expect((result.agents as Record<string, { model: string }>).sisyphus.model).toBe("anthropic/claude-opus-4-7")
   })
 
   test("uses native OpenAI models when only ChatGPT available", () => {
@@ -131,7 +131,7 @@ describe("generateOmoConfig - model fallback system", () => {
     }>
 
     //#then
-    expect(agents.sisyphus.model).toBe("anthropic/claude-opus-4-6")
+    expect(agents.sisyphus.model).toBe("anthropic/claude-opus-4-7")
     expect(agents.sisyphus.fallback_models).toEqual([
       {
         model: "openai/gpt-5.4",
@@ -141,7 +141,7 @@ describe("generateOmoConfig - model fallback system", () => {
     expect(categories.deep.model).toBe("openai/gpt-5.4")
     expect(categories.deep.fallback_models).toEqual([
       {
-        model: "anthropic/claude-opus-4-6",
+        model: "anthropic/claude-opus-4-7",
         variant: "max",
       },
     ])