feat(store): fetch contributions incrementally and persist history in SQLite

Bound each provider's startFetch()/resolveFetch() to an optional
since/until window, wire a SQLite-backed ContributionStore into
ContributionAggregator (fetch only the trailing window past the last
stored date, merge into the store, prune by CONTRIBUTIONS_RETENTION_DAYS),
and add a graph:contributions:refetch command to force a full or ranged
re-fetch in <=365-day chunks. This is the root fix for the full
365-day-refetch timeout that used to hit on every cache miss.

tests/Unit/Service/Provider/GitLabProviderTest.php

@@ -31,6 +31,7 @@ final class GitLabProviderTest extends TestCase
         );
     }
 
+    /** @param array<int, array<string, int|string>> $data raw JSON body, e.g. events or the user lookup */
     private function stubResponse(array $data): ResponseInterface
     {
         $response = $this->createStub(ResponseInterface::class);
@@ -128,4 +129,27 @@ final class GitLabProviderTest extends TestCase
         $this->assertSame(100, $result['2024-06-10']);
         $this->assertSame(1, $result['2024-06-11']);
     }
+
+    #[Test]
+    public function it_sends_after_and_before_query_params_when_since_and_until_are_given(): void
+    {
+        $capturedQuery = null;
+
+        $client = $this->createMock(HttpClientInterface::class);
+        $client->method('request')->willReturnCallback(
+            function (string $method, string $url, array $options = []) use (&$capturedQuery): ResponseInterface {
+                if (str_contains($url, '/events')) {
+                    $capturedQuery = $options['query'];
+                }
+
+                return $this->stubResponse(str_contains($url, '/events') ? [] : [['id' => 42]]);
+            }
+        );
+
+        $provider = $this->makeProvider(client: $client);
+        $provider->startFetch(new \DateTimeImmutable('2024-01-01'), new \DateTimeImmutable('2024-01-31'));
+
+        $this->assertSame('2024-01-01', $capturedQuery['after']);
+        $this->assertSame('2024-01-31', $capturedQuery['before']);
+    }
 }