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/index.compaction-model-agnostic.static.test.ts

@@ -13,7 +13,7 @@ describe("experimental.session.compacting", () => {
 
     //#then
     expect(hookIndex).toBeGreaterThanOrEqual(0)
-    expect(content.includes('modelID: "claude-opus-4-6"')).toBe(false)
+    expect(content.includes('modelID: "claude-opus-4-7"')).toBe(false)
     expect(hookSlice.includes("output.context.push")).toBe(true)
     expect(hookSlice.includes("providerID:")).toBe(false)
     expect(hookSlice.includes("modelID:")).toBe(false)