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/model-settings-compatibility.test.ts

@@ -6,7 +6,7 @@ describe("resolveCompatibleModelSettings", () => {
   test("keeps supported Claude Opus variant unchanged", () => {
     const result = resolveCompatibleModelSettings({
       providerID: "anthropic",
-      modelID: "claude-opus-4-6",
+      modelID: "claude-opus-4-7",
       desired: { variant: "max" },
     })
 
@@ -20,7 +20,7 @@ describe("resolveCompatibleModelSettings", () => {
   test("uses model metadata first for variant support", () => {
     const result = resolveCompatibleModelSettings({
       providerID: "anthropic",
-      modelID: "claude-opus-4-6",
+      modelID: "claude-opus-4-7",
       desired: { variant: "max" },
       capabilities: { variants: ["low", "medium", "high"] },
     })
@@ -42,7 +42,7 @@ describe("resolveCompatibleModelSettings", () => {
   test("prefers metadata over family heuristics even when family would allow a higher level", () => {
     const result = resolveCompatibleModelSettings({
       providerID: "anthropic",
-      modelID: "claude-opus-4-6",
+      modelID: "claude-opus-4-7",
       desired: { variant: "max" },
       capabilities: { variants: ["low", "medium"] },
     })
@@ -514,7 +514,7 @@ describe("resolveCompatibleModelSettings", () => {
   test("no-op when desired settings are empty", () => {
     const result = resolveCompatibleModelSettings({
       providerID: "anthropic",
-      modelID: "claude-opus-4-6",
+      modelID: "claude-opus-4-7",
       desired: {},
     })