feat: log entitlement purchases (#3)

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- [x] I have read and agree to the [Community Guidelines](https://docs.nhcarrigan.com/community/guide/).
- [x] My contribution complies with the [Contributor Covenant](https://docs.nhcarrigan.com/dev/covenant/).

### Dependencies

- [x] I have pinned the dependencies to a specific patch version.

### Style

- [x] I have run the linter and resolved any errors.
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### Tests

- [ ] My contribution adds new code, and I have added tests to cover it.
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Reviewed-on: #3
Co-authored-by: Naomi Carrigan <commits@nhcarrigan.com>
Co-committed-by: Naomi Carrigan <commits@nhcarrigan.com>

pnpm-lock.yaml

@@ -8,6 +8,9 @@ importers:
 
   .:
     dependencies:
+      discord-verify:
+        specifier: 1.2.0
+        version: 1.2.0
       fastify:
         specifier: 5.2.1
         version: 5.2.1
@@ -432,15 +435,33 @@ packages:
     peerDependencies:
       eslint: '>=8.40.0'
 
+  '@types/body-parser@1.19.6':
+    resolution: {integrity: sha512-HLFeCYgz89uk22N5Qg3dvGvsv46B8GLvKKo1zKG4NybA8U2DiEO3w9lqGg29t/tfLRJpJ6iQxnVw4OnB7MoM9g==}
+
+  '@types/connect@3.4.38':
+    resolution: {integrity: sha512-K6uROf1LD88uDQqJCktA4yzL1YYAK6NgfsI0v/mTgyPKWsX1CnJ0XPSDhViejru1GcRkLWb8RlzFYJRqGUbaug==}
+
   '@types/estree@1.0.6':
     resolution: {integrity: sha512-AYnb1nQyY49te+VRAVgmzfcgjYS91mY5P0TKUDCLEM+gNnA+3T6rWITXRLYCpahpqSQbN5cE+gHpnPyXjHWxcw==}
 
+  '@types/express-serve-static-core@4.19.6':
+    resolution: {integrity: sha512-N4LZ2xG7DatVqhCZzOGb1Yi5lMbXSZcmdLDe9EzSndPV2HpWYWzRbaerl2n27irrm94EPpprqa8KpskPT085+A==}
+
+  '@types/express@4.17.23':
+    resolution: {integrity: sha512-Crp6WY9aTYP3qPi2wGDo9iUe/rceX01UMhnF1jmwDcKCFM6cx7YhGP/Mpr3y9AASpfHixIG0E6azCcL5OcDHsQ==}
+
+  '@types/http-errors@2.0.5':
+    resolution: {integrity: sha512-r8Tayk8HJnX0FztbZN7oVqGccWgw98T/0neJphO91KkmOzug1KkofZURD4UaD5uH8AqcFLfdPErnBod0u71/qg==}
+
   '@types/json-schema@7.0.15':
     resolution: {integrity: sha512-5+fP8P8MFNC+AyZCDxrB2pkZFPGzqQWUzpSeuuVLvm8VMcorNYavBqoFcxK8bQz4Qsbn4oUEEem4wDLfcysGHA==}
 
   '@types/json5@0.0.29':
     resolution: {integrity: sha512-dRLjCWHYg4oaA77cxO64oO+7JwCwnIzkZPdrrC71jQmQtlhM556pwKo5bUzqvZndkVbeFLIIi+9TC40JNF5hNQ==}
 
+  '@types/mime@1.3.5':
+    resolution: {integrity: sha512-/pyBZWSLD2n0dcHE3hq8s8ZvcETHtEuF+3E7XVt0Ig2nvsVQXdghHVcEkIWjy9A0wKfTn97a/PSDYohKIlnP/w==}
+
   '@types/node@22.13.1':
     resolution: {integrity: sha512-jK8uzQlrvXqEU91UxiK5J7pKHyzgnI1Qnl0QDHIgVGuolJhRb9EEl28Cj9b3rGR8B2lhFCtvIm5os8lFnO/1Ew==}
 
@@ -450,6 +471,18 @@ packages:
   '@types/normalize-package-data@2.4.4':
     resolution: {integrity: sha512-37i+OaWTh9qeK4LSHPsyRC7NahnGotNuZvjLSgcPzblpHB3rrCJxAOgI5gCdKm7coonsaX1Of0ILiTcnZjbfxA==}
 
+  '@types/qs@6.14.0':
+    resolution: {integrity: sha512-eOunJqu0K1923aExK6y8p6fsihYEn/BYuQ4g0CxAAgFc4b/ZLN4CrsRZ55srTdqoiLzU2B2evC+apEIxprEzkQ==}
+
+  '@types/range-parser@1.2.7':
+    resolution: {integrity: sha512-hKormJbkJqzQGhziax5PItDUTMAM9uE2XXQmM37dyd4hVM+5aVl7oVxMVUiVQn2oCQFN/LKCZdvSM0pFRqbSmQ==}
+
+  '@types/send@0.17.5':
+    resolution: {integrity: sha512-z6F2D3cOStZvuk2SaP6YrwkNO65iTZcwA2ZkSABegdkAh/lf+Aa/YQndZVfmEXT5vgAp6zv06VQ3ejSVjAny4w==}
+
+  '@types/serve-static@1.15.8':
+    resolution: {integrity: sha512-roei0UY3LhpOJvjbIP6ZZFngyLKl5dskOtDhxY5THRSpO+ZI+nzJ+m5yUMzGrp89YRa7lvknKkMYjqQFGwA7Sg==}
+
   '@typescript-eslint/eslint-plugin@8.19.0':
     resolution: {integrity: sha512-NggSaEZCdSrFddbctrVjkVZvFC6KGfKfNK0CU7mNK/iKHGKbzT4Wmgm08dKpcZECBu9f5FypndoMyRHkdqfT1Q==}
     engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
@@ -831,6 +864,10 @@ packages:
     resolution: {integrity: sha512-WkrWp9GR4KXfKGYzOLmTuGVi1UWFfws377n9cc55/tb6DuqyF6pcQ5AbiHEshaDpY9v6oaSr2XCDidGmMwdzIA==}
     engines: {node: '>=8'}
 
+  discord-verify@1.2.0:
+    resolution: {integrity: sha512-8qlrMROW8DhpzWWzgNq9kpeLDxKanWa4EDVoj/ASVv2nr+dSr4JPmu2tFSydf3hAGI/OIJTnZyD0JulMYIxx4w==}
+    engines: {node: '>=16'}
+
   doctrine@2.1.0:
     resolution: {integrity: sha512-35mSku4ZXK0vfCuHEDAwt55dg2jNajHZ1odvF+8SSr82EsZY4QmXfuWso8oEd8zRhVObSN18aM0CjSdoBX7zIw==}
     engines: {node: '>=0.10.0'}
@@ -2358,12 +2395,39 @@ snapshots:
       - supports-color
       - typescript
 
+  '@types/body-parser@1.19.6':
+    dependencies:
+      '@types/connect': 3.4.38
+      '@types/node': 22.13.1
+
+  '@types/connect@3.4.38':
+    dependencies:
+      '@types/node': 22.13.1
+
   '@types/estree@1.0.6': {}
 
+  '@types/express-serve-static-core@4.19.6':
+    dependencies:
+      '@types/node': 22.13.1
+      '@types/qs': 6.14.0
+      '@types/range-parser': 1.2.7
+      '@types/send': 0.17.5
+
+  '@types/express@4.17.23':
+    dependencies:
+      '@types/body-parser': 1.19.6
+      '@types/express-serve-static-core': 4.19.6
+      '@types/qs': 6.14.0
+      '@types/serve-static': 1.15.8
+
+  '@types/http-errors@2.0.5': {}
+
   '@types/json-schema@7.0.15': {}
 
   '@types/json5@0.0.29': {}
 
+  '@types/mime@1.3.5': {}
+
   '@types/node@22.13.1':
     dependencies:
       undici-types: 6.20.0
@@ -2374,6 +2438,21 @@ snapshots:
 
   '@types/normalize-package-data@2.4.4': {}
 
+  '@types/qs@6.14.0': {}
+
+  '@types/range-parser@1.2.7': {}
+
+  '@types/send@0.17.5':
+    dependencies:
+      '@types/mime': 1.3.5
+      '@types/node': 22.13.1
+
+  '@types/serve-static@1.15.8':
+    dependencies:
+      '@types/http-errors': 2.0.5
+      '@types/node': 22.13.1
+      '@types/send': 0.17.5
+
   '@typescript-eslint/eslint-plugin@8.19.0(@typescript-eslint/parser@8.19.0(eslint@9.20.0)(typescript@5.7.3))(eslint@9.20.0)(typescript@5.7.3)':
     dependencies:
       '@eslint-community/regexpp': 4.12.1
@@ -2833,6 +2912,10 @@ snapshots:
     dependencies:
       path-type: 4.0.0
 
+  discord-verify@1.2.0:
+    dependencies:
+      '@types/express': 4.17.23
+
   doctrine@2.1.0:
     dependencies:
       esutils: 2.0.3