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/connected-providers-cache.test.ts

@@ -61,7 +61,7 @@ describe("updateConnectedProvidersCache", () => {
 									name: "Anthropic",
 									env: [],
 									models: {
-										"claude-opus-4-6": { id: "claude-opus-4-6", name: "Claude Opus 4.6" },
+										"claude-opus-4-7": { id: "claude-opus-4-7", name: "Claude Opus 4.6" },
 										"claude-sonnet-4-6": { id: "claude-sonnet-4-6", name: "Claude Sonnet 4.6" },
 									},
 								},
@@ -84,7 +84,7 @@ describe("updateConnectedProvidersCache", () => {
 					{ id: "gpt-5.4", name: "GPT-5.4" },
 				],
 				anthropic: [
-					{ id: "claude-opus-4-6", name: "Claude Opus 4.6" },
+					{ id: "claude-opus-4-7", name: "Claude Opus 4.6" },
 					{ id: "claude-sonnet-4-6", name: "Claude Sonnet 4.6" },
 				],
 			})