halkyon_base: a Serverpod module for sign-in, accounts and instance basics

What every Halkyon server has, taken from Halkyon Learn's: anonymous,
GitHub and email-code sign-in with their endpoints, an account's ways
in and its deletion, the pruning of abandoned anonymous people, of
sign-up attempts and of expired codes, and the instance's basics (the
sign-in ways offered, the source link, the minimum app build, where
people's data and its backups are). Endpoints sit under the nickname
`base`. A host configures it in one place before its pod starts: its
name for the mails, its source link, its minimum build, and hooks that
delete its own data with a person.

The tables keep Learn's names, columns and indexes, so a host moving
onto the module migrates nothing but version rows. Server package under
the SSPL, client under the AGPL, as Learn's are.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>

packages/halkyon_base_server/config/generator.yaml

@@ -0,0 +1,7 @@
+type: module
+# The name its endpoints have in a host's client (`client.base.emailCode`);
+# a host may choose another in its own generator.yaml.
+nickname: base
+
+client_package_path: ../halkyon_base_client
+server_test_tools_path: test/integration/test_tools

packages/halkyon_base_server/config/test.yaml

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+# The module's test server: every port 0, so the tests find free ones and can run
+# side by side. The database is the embedded PostgreSQL Serverpod starts and
+# manages itself (`dataPath`): no Docker needed, `dart test` is enough. Its password
+# and the tests' other secrets are in config/passwords.yaml (git-ignored; see the
+# README for the keys).
+
+apiServer:
+  port: 0
+  publicHost: localhost
+  publicPort: 0
+  publicScheme: http
+
+insightsServer:
+  port: 0
+  publicHost: localhost
+  publicPort: 0
+  publicScheme: http
+
+webServer:
+  port: 0
+  publicHost: localhost
+  publicPort: 0
+  publicScheme: http
+
+database:
+  host: localhost
+  port: 9090
+  name: halkyon_base_test
+  user: postgres
+  dataPath: .serverpod/test/pgdata
+
+redis:
+  enabled: false
+  host: localhost
+  port: 9091
+
+# Session logs are never kept, for privacy, as on every Halkyon server.
+sessionLogs:
+  persistentEnabled: false
+  consoleEnabled: true