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/agents/builtin-agents/sisyphus-agent.test.ts

@@ -43,7 +43,7 @@ describe("maybeCreateSisyphusConfig", () => {
       // given
       const agentOverrides: AgentOverrides = {
         sisyphus: {
-          model: "anthropic/claude-opus-4-6",
+          model: "anthropic/claude-opus-4-7",
           permission: {
             apply_patch: "allow",
           },
@@ -55,8 +55,8 @@ describe("maybeCreateSisyphusConfig", () => {
       const config = maybeCreateSisyphusConfig({
         disabledAgents: [],
         agentOverrides,
-        availableModels: new Set(["anthropic/claude-opus-4-6"]),
-        systemDefaultModel: "anthropic/claude-opus-4-6",
+        availableModels: new Set(["anthropic/claude-opus-4-7"]),
+        systemDefaultModel: "anthropic/claude-opus-4-7",
         isFirstRunNoCache: false,
         availableAgents: [],
         availableSkills: [],
@@ -67,7 +67,7 @@ describe("maybeCreateSisyphusConfig", () => {
 
       // then
       expect(config).toBeDefined();
-      expect(config?.model).toBe("anthropic/claude-opus-4-6");
+      expect(config?.model).toBe("anthropic/claude-opus-4-7");
       // Claude models should allow the user override
       expect(config?.permission).toHaveProperty("apply_patch", "allow");
     });