Redesign the caching Job Summary (#985)

Redesigns the caching section of the Job Summary into a single,
consistent layout across every cache provider and state, and integrates
the provider message into the report rather than appending it
disconnected at the bottom.

## Motivation

The caching report was produced by three divergent code paths (NoOp /
basic / enhanced), each rendering its own markdown:

- **Explicitly disabled** → a one-line message, no expand, no provider
note.
- **Enhanced** (incl. skipped-due-to-existing-home) → a full `<details>`
block.
- **Basic** → a one-line message with **no** expandable details at all.

The Enhanced/Basic provider note floated at the very bottom,
disconnected from the report.

## What changed

`save()` now returns structured `CacheReport` data instead of
pre-rendered HTML, and a single renderer (`caching-report.ts`) produces
one unified layout for all variants:

- **Section heading**: `#### <icon> Gradle Caching — <Provider>
(<status>)`
- **Status line** explaining what the cache did
- **Integrated provider note** woven in under the heading — now shown
**unconditionally** (no longer gated on license acceptance)
- **Expandable cache-entry details** when there are entries — basic
caching now gets this too

The two disabled variants (explicitly disabled, and skipped due to a
pre-existing Gradle User Home) render as **compact callouts with no
expandable section**.

### Main repo
- `caching-report.ts` (new): central renderer + all framing copy + entry
table/`<pre>` helpers.
- `cache-service.ts`: `CacheReport` / `CacheEntryReport` / status types;
`save()` returns `CacheReport`.
- `cache-service-loader.ts`: `NoOp` returns a report;
`LicenseWarningCacheService` removed; new `getProviderNote()`.
- `cache-service-basic.ts`: builds a `CacheReport`.
- `job-summary.ts` / `setup-gradle.ts`: thread `CacheReport` +
`ProviderNote`.
- `configuration.ts`: remove now-unused `isCacheLicenseAccepted()`.

### Vendored library
The structured contract requires **gradle-actions-caching v0.7.0**
(gradle/actions-caching#74). This PR updates the vendored library to
that release — the official `Update gradle-actions-caching library to
v0.7.0` vendor commit is included here, so merging this PR ships the
redesign together with the library it depends on.

## Testing

- Both repos build; prettier + eslint clean.
- `gradle/actions`: 363/363 Jest tests pass, including new
`caching-report.test.ts` covering every variant.
- `gradle-actions-caching`: 74/74 pass under JDK 17.
- Rendered markdown verified for all five variants (enhanced/basic
enabled & read-only, disabled, skipped).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Bot Githubaction <bot-githubaction@gradle.com>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

sources/src/cache-service.ts

@@ -12,7 +12,45 @@ export interface CacheOptions {
     excludes: string[]
 }
 
+export type CacheStatus =
+    | 'enabled'
+    | 'read-only'
+    | 'write-only'
+    | 'disabled'
+    | 'disabled-existing-home'
+    | 'not-available'
+
+export type CacheCleanupStatus =
+    | 'enabled'
+    | 'disabled-param'
+    | 'disabled-failure'
+    | 'disabled-config-cache-hit'
+    | 'disabled-readonly'
+
+export interface CacheEntryReport {
+    entryName: string
+    requestedKey?: string
+    restoredKey?: string
+    restoredSize?: number
+    restoredTime?: number
+    restoredOutcome: string
+    savedKey?: string
+    savedSize?: number
+    savedTime?: number
+    savedOutcome: string
+}
+
+/**
+ * Structured result of a cache save operation. Rendering this into a human-readable
+ * Job Summary is handled centrally by `caching-report.ts`.
+ */
+export interface CacheReport {
+    status: CacheStatus
+    cleanup?: CacheCleanupStatus
+    entries: CacheEntryReport[]
+}
+
 export interface CacheService {
     restore(gradleUserHome: string, cacheOptions: CacheOptions): Promise<void>
-    save(gradleUserHome: string, buildResults: BuildResult[], cacheOptions: CacheOptions): Promise<string>
+    save(gradleUserHome: string, buildResults: BuildResult[], cacheOptions: CacheOptions): Promise<CacheReport>
 }