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/provider-model-id-transform.ts

@@ -54,7 +54,7 @@ export function transformModelForProvider(provider: string, model: string): stri
   }
 
   if (provider === "anthropic") {
-    // Installer writes hyphenated IDs (claude-opus-4-6) to the config. The
+    // Installer writes hyphenated IDs (claude-opus-4-7) to the config. The
     // runtime provider-model-id-transform converts dash→dot when calling the
     // Anthropic API. Keeping the dotted form in the config breaks fresh
     // installs with ProviderModelNotFoundError because Anthropic's provider