feat(todo): filters in Todoist's language, and a view of each label (ADR 0033, D35)

A filter is a query read on the device, as the server sees no task, kept
sealed in `saved_filter`. Filters & labels is a screen of its own under
Browse; a label opens its tasks, and favourite filters and labels join
Browse's Favourites. D36 records what of Todoist's Pro stays out.

Whats-New: Filters: keep views like "today & p1", and open a label to see its tasks, under Browse in Filters & labels.
Whats-New-De: Filter: Speichere Ansichten wie „heute & p1“ und öffne ein Label, um seine Aufgaben zu sehen, in der Übersicht unter Filter & Labels.

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

apps/todo/halkyon_todo_server/migrations/20261106183802735-filters/definition_project.json

@@ -0,0 +1,613 @@
+{
+  "__className__": "serverpod.DatabaseDefinition",
+  "schemaVersion": 2,
+  "moduleName": "halkyon_todo",
+  "tables": [
+    {
+      "__className__": "serverpod.TableDefinition",
+      "name": "content_key",
+      "dartName": "ContentKey",
+      "module": "halkyon_todo",
+      "schema": "public",
+      "columns": [
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "id",
+          "fieldName": "id",
+          "columnType": 7,
+          "isNullable": false,
+          "columnDefault": "random_v7",
+          "dartType": "UuidValue?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "spaceId",
+          "fieldName": "spaceId",
+          "columnType": 6,
+          "isNullable": true,
+          "dartType": "int?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "dataKeyId",
+          "fieldName": "dataKeyId",
+          "columnType": 0,
+          "isNullable": false,
+          "dartType": "String"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "sealedKey",
+          "fieldName": "sealedKey",
+          "columnType": 5,
+          "isNullable": false,
+          "dartType": "dart:typed_data:ByteData"
+        }
+      ],
+      "foreignKeys": [
+        {
+          "__className__": "serverpod.ForeignKeyDefinition",
+          "constraintName": "content_key_fk_0",
+          "columns": [
+            "spaceId"
+          ],
+          "referenceTable": "offline_sync_spaces",
+          "referenceTableSchema": "public",
+          "referenceColumns": [
+            "id"
+          ],
+          "onUpdate": 3,
+          "onDelete": 4
+        }
+      ],
+      "indexes": [
+        {
+          "__className__": "serverpod.IndexDefinition",
+          "indexName": "content_key_space_idx",
+          "elements": [
+            {
+              "__className__": "serverpod.IndexElementDefinition",
+              "type": 0,
+              "definition": "spaceId"
+            }
+          ],
+          "type": "btree",
+          "isUnique": false,
+          "isPrimary": false
+        }
+      ],
+      "managed": true
+    },
+    {
+      "__className__": "serverpod.TableDefinition",
+      "name": "label",
+      "dartName": "Label",
+      "module": "halkyon_todo",
+      "schema": "public",
+      "columns": [
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "id",
+          "fieldName": "id",
+          "columnType": 7,
+          "isNullable": false,
+          "columnDefault": "random_v7",
+          "dartType": "UuidValue?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "spaceId",
+          "fieldName": "spaceId",
+          "columnType": 6,
+          "isNullable": true,
+          "dartType": "int?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "keyId",
+          "fieldName": "keyId",
+          "columnType": 0,
+          "isNullable": true,
+          "dartType": "String?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "payload",
+          "fieldName": "payload",
+          "columnType": 5,
+          "isNullable": false,
+          "dartType": "dart:typed_data:ByteData"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "nonce",
+          "fieldName": "nonce",
+          "columnType": 5,
+          "isNullable": true,
+          "dartType": "dart:typed_data:ByteData?"
+        }
+      ],
+      "foreignKeys": [
+        {
+          "__className__": "serverpod.ForeignKeyDefinition",
+          "constraintName": "label_fk_0",
+          "columns": [
+            "spaceId"
+          ],
+          "referenceTable": "offline_sync_spaces",
+          "referenceTableSchema": "public",
+          "referenceColumns": [
+            "id"
+          ],
+          "onUpdate": 3,
+          "onDelete": 4
+        }
+      ],
+      "indexes": [
+        {
+          "__className__": "serverpod.IndexDefinition",
+          "indexName": "label_space_idx",
+          "elements": [
+            {
+              "__className__": "serverpod.IndexElementDefinition",
+              "type": 0,
+              "definition": "spaceId"
+            }
+          ],
+          "type": "btree",
+          "isUnique": false,
+          "isPrimary": false
+        }
+      ],
+      "managed": true
+    },
+    {
+      "__className__": "serverpod.TableDefinition",
+      "name": "project",
+      "dartName": "Project",
+      "module": "halkyon_todo",
+      "schema": "public",
+      "columns": [
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "id",
+          "fieldName": "id",
+          "columnType": 7,
+          "isNullable": false,
+          "columnDefault": "random_v7",
+          "dartType": "UuidValue?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "spaceId",
+          "fieldName": "spaceId",
+          "columnType": 6,
+          "isNullable": true,
+          "dartType": "int?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "keyId",
+          "fieldName": "keyId",
+          "columnType": 0,
+          "isNullable": true,
+          "dartType": "String?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "payload",
+          "fieldName": "payload",
+          "columnType": 5,
+          "isNullable": false,
+          "dartType": "dart:typed_data:ByteData"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "nonce",
+          "fieldName": "nonce",
+          "columnType": 5,
+          "isNullable": true,
+          "dartType": "dart:typed_data:ByteData?"
+        }
+      ],
+      "foreignKeys": [
+        {
+          "__className__": "serverpod.ForeignKeyDefinition",
+          "constraintName": "project_fk_0",
+          "columns": [
+            "spaceId"
+          ],
+          "referenceTable": "offline_sync_spaces",
+          "referenceTableSchema": "public",
+          "referenceColumns": [
+            "id"
+          ],
+          "onUpdate": 3,
+          "onDelete": 4
+        }
+      ],
+      "indexes": [
+        {
+          "__className__": "serverpod.IndexDefinition",
+          "indexName": "project_space_idx",
+          "elements": [
+            {
+              "__className__": "serverpod.IndexElementDefinition",
+              "type": 0,
+              "definition": "spaceId"
+            }
+          ],
+          "type": "btree",
+          "isUnique": false,
+          "isPrimary": false
+        }
+      ],
+      "managed": true
+    },
+    {
+      "__className__": "serverpod.TableDefinition",
+      "name": "saved_filter",
+      "dartName": "SavedFilter",
+      "module": "halkyon_todo",
+      "schema": "public",
+      "columns": [
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "id",
+          "fieldName": "id",
+          "columnType": 7,
+          "isNullable": false,
+          "columnDefault": "random_v7",
+          "dartType": "UuidValue?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "spaceId",
+          "fieldName": "spaceId",
+          "columnType": 6,
+          "isNullable": true,
+          "dartType": "int?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "keyId",
+          "fieldName": "keyId",
+          "columnType": 0,
+          "isNullable": true,
+          "dartType": "String?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "payload",
+          "fieldName": "payload",
+          "columnType": 5,
+          "isNullable": false,
+          "dartType": "dart:typed_data:ByteData"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "nonce",
+          "fieldName": "nonce",
+          "columnType": 5,
+          "isNullable": true,
+          "dartType": "dart:typed_data:ByteData?"
+        }
+      ],
+      "foreignKeys": [
+        {
+          "__className__": "serverpod.ForeignKeyDefinition",
+          "constraintName": "saved_filter_fk_0",
+          "columns": [
+            "spaceId"
+          ],
+          "referenceTable": "offline_sync_spaces",
+          "referenceTableSchema": "public",
+          "referenceColumns": [
+            "id"
+          ],
+          "onUpdate": 3,
+          "onDelete": 4
+        }
+      ],
+      "indexes": [
+        {
+          "__className__": "serverpod.IndexDefinition",
+          "indexName": "saved_filter_space_idx",
+          "elements": [
+            {
+              "__className__": "serverpod.IndexElementDefinition",
+              "type": 0,
+              "definition": "spaceId"
+            }
+          ],
+          "type": "btree",
+          "isUnique": false,
+          "isPrimary": false
+        }
+      ],
+      "managed": true
+    },
+    {
+      "__className__": "serverpod.TableDefinition",
+      "name": "section",
+      "dartName": "Section",
+      "module": "halkyon_todo",
+      "schema": "public",
+      "columns": [
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "id",
+          "fieldName": "id",
+          "columnType": 7,
+          "isNullable": false,
+          "columnDefault": "random_v7",
+          "dartType": "UuidValue?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "spaceId",
+          "fieldName": "spaceId",
+          "columnType": 6,
+          "isNullable": true,
+          "dartType": "int?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "keyId",
+          "fieldName": "keyId",
+          "columnType": 0,
+          "isNullable": true,
+          "dartType": "String?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "payload",
+          "fieldName": "payload",
+          "columnType": 5,
+          "isNullable": false,
+          "dartType": "dart:typed_data:ByteData"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "nonce",
+          "fieldName": "nonce",
+          "columnType": 5,
+          "isNullable": true,
+          "dartType": "dart:typed_data:ByteData?"
+        }
+      ],
+      "foreignKeys": [
+        {
+          "__className__": "serverpod.ForeignKeyDefinition",
+          "constraintName": "section_fk_0",
+          "columns": [
+            "spaceId"
+          ],
+          "referenceTable": "offline_sync_spaces",
+          "referenceTableSchema": "public",
+          "referenceColumns": [
+            "id"
+          ],
+          "onUpdate": 3,
+          "onDelete": 4
+        }
+      ],
+      "indexes": [
+        {
+          "__className__": "serverpod.IndexDefinition",
+          "indexName": "section_space_idx",
+          "elements": [
+            {
+              "__className__": "serverpod.IndexElementDefinition",
+              "type": 0,
+              "definition": "spaceId"
+            }
+          ],
+          "type": "btree",
+          "isUnique": false,
+          "isPrimary": false
+        }
+      ],
+      "managed": true
+    },
+    {
+      "__className__": "serverpod.TableDefinition",
+      "name": "task",
+      "dartName": "Task",
+      "module": "halkyon_todo",
+      "schema": "public",
+      "columns": [
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "id",
+          "fieldName": "id",
+          "columnType": 7,
+          "isNullable": false,
+          "columnDefault": "random_v7",
+          "dartType": "UuidValue?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "spaceId",
+          "fieldName": "spaceId",
+          "columnType": 6,
+          "isNullable": true,
+          "dartType": "int?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "keyId",
+          "fieldName": "keyId",
+          "columnType": 0,
+          "isNullable": true,
+          "dartType": "String?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "payload",
+          "fieldName": "payload",
+          "columnType": 5,
+          "isNullable": false,
+          "dartType": "dart:typed_data:ByteData"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "nonce",
+          "fieldName": "nonce",
+          "columnType": 5,
+          "isNullable": true,
+          "dartType": "dart:typed_data:ByteData?"
+        }
+      ],
+      "foreignKeys": [
+        {
+          "__className__": "serverpod.ForeignKeyDefinition",
+          "constraintName": "task_fk_0",
+          "columns": [
+            "spaceId"
+          ],
+          "referenceTable": "offline_sync_spaces",
+          "referenceTableSchema": "public",
+          "referenceColumns": [
+            "id"
+          ],
+          "onUpdate": 3,
+          "onDelete": 4
+        }
+      ],
+      "indexes": [
+        {
+          "__className__": "serverpod.IndexDefinition",
+          "indexName": "task_space_idx",
+          "elements": [
+            {
+              "__className__": "serverpod.IndexElementDefinition",
+              "type": 0,
+              "definition": "spaceId"
+            }
+          ],
+          "type": "btree",
+          "isUnique": false,
+          "isPrimary": false
+        }
+      ],
+      "managed": true
+    },
+    {
+      "__className__": "serverpod.TableDefinition",
+      "name": "todo_settings",
+      "dartName": "TodoSettings",
+      "module": "halkyon_todo",
+      "schema": "public",
+      "columns": [
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "id",
+          "fieldName": "id",
+          "columnType": 7,
+          "isNullable": false,
+          "columnDefault": "random_v7",
+          "dartType": "UuidValue?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "spaceId",
+          "fieldName": "spaceId",
+          "columnType": 6,
+          "isNullable": true,
+          "dartType": "int?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "keyId",
+          "fieldName": "keyId",
+          "columnType": 0,
+          "isNullable": true,
+          "dartType": "String?"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "payload",
+          "fieldName": "payload",
+          "columnType": 5,
+          "isNullable": false,
+          "dartType": "dart:typed_data:ByteData"
+        },
+        {
+          "__className__": "serverpod.ColumnDefinition",
+          "name": "nonce",
+          "fieldName": "nonce",
+          "columnType": 5,
+          "isNullable": true,
+          "dartType": "dart:typed_data:ByteData?"
+        }
+      ],
+      "foreignKeys": [
+        {
+          "__className__": "serverpod.ForeignKeyDefinition",
+          "constraintName": "todo_settings_fk_0",
+          "columns": [
+            "spaceId"
+          ],
+          "referenceTable": "offline_sync_spaces",
+          "referenceTableSchema": "public",
+          "referenceColumns": [
+            "id"
+          ],
+          "onUpdate": 3,
+          "onDelete": 4
+        }
+      ],
+      "indexes": [
+        {
+          "__className__": "serverpod.IndexDefinition",
+          "indexName": "todo_settings_space_idx",
+          "elements": [
+            {
+              "__className__": "serverpod.IndexElementDefinition",
+              "type": 0,
+              "definition": "spaceId"
+            }
+          ],
+          "type": "btree",
+          "isUnique": false,
+          "isPrimary": false
+        }
+      ],
+      "managed": true
+    }
+  ],
+  "installedModules": [
+    {
+      "__className__": "serverpod.DatabaseMigrationVersion",
+      "module": "halkyon_base",
+      "version": "20261026140329453-assistant-budgets"
+    },
+    {
+      "__className__": "serverpod.DatabaseMigrationVersion",
+      "module": "serverpod",
+      "version": "20260824182259319"
+    },
+    {
+      "__className__": "serverpod.DatabaseMigrationVersion",
+      "module": "serverpod_auth_idp",
+      "version": "20260924105404509"
+    },
+    {
+      "__className__": "serverpod.DatabaseMigrationVersion",
+      "module": "serverpod_offline_sync",
+      "version": "20260914143806119"
+    },
+    {
+      "__className__": "serverpod.DatabaseMigrationVersion",
+      "module": "halkyon_oidc",
+      "version": "20261023180644988"
+    },
+    {
+      "__className__": "serverpod.DatabaseMigrationVersion",
+      "module": "serverpod_auth_core",
+      "version": "20260924105232991"
+    }
+  ],
+  "migrationApiVersion": 1
+}

apps/todo/halkyon_todo_server/migrations/20261106183802735-filters/migration.json

@@ -0,0 +1,94 @@
+{
+  "__className__": "serverpod.DatabaseMigration",
+  "actions": [
+    {
+      "__className__": "serverpod.DatabaseMigrationAction",
+      "type": "createTable",
+      "createTable": {
+        "__className__": "serverpod.TableDefinition",
+        "name": "saved_filter",
+        "dartName": "SavedFilter",
+        "module": "halkyon_todo",
+        "schema": "public",
+        "columns": [
+          {
+            "__className__": "serverpod.ColumnDefinition",
+            "name": "id",
+            "fieldName": "id",
+            "columnType": 7,
+            "isNullable": false,
+            "columnDefault": "random_v7",
+            "dartType": "UuidValue?"
+          },
+          {
+            "__className__": "serverpod.ColumnDefinition",
+            "name": "spaceId",
+            "fieldName": "spaceId",
+            "columnType": 6,
+            "isNullable": true,
+            "dartType": "int?"
+          },
+          {
+            "__className__": "serverpod.ColumnDefinition",
+            "name": "keyId",
+            "fieldName": "keyId",
+            "columnType": 0,
+            "isNullable": true,
+            "dartType": "String?"
+          },
+          {
+            "__className__": "serverpod.ColumnDefinition",
+            "name": "payload",
+            "fieldName": "payload",
+            "columnType": 5,
+            "isNullable": false,
+            "dartType": "dart:typed_data:ByteData"
+          },
+          {
+            "__className__": "serverpod.ColumnDefinition",
+            "name": "nonce",
+            "fieldName": "nonce",
+            "columnType": 5,
+            "isNullable": true,
+            "dartType": "dart:typed_data:ByteData?"
+          }
+        ],
+        "foreignKeys": [
+          {
+            "__className__": "serverpod.ForeignKeyDefinition",
+            "constraintName": "saved_filter_fk_0",
+            "columns": [
+              "spaceId"
+            ],
+            "referenceTable": "offline_sync_spaces",
+            "referenceTableSchema": "public",
+            "referenceColumns": [
+              "id"
+            ],
+            "onUpdate": 3,
+            "onDelete": 4
+          }
+        ],
+        "indexes": [
+          {
+            "__className__": "serverpod.IndexDefinition",
+            "indexName": "saved_filter_space_idx",
+            "elements": [
+              {
+                "__className__": "serverpod.IndexElementDefinition",
+                "type": 0,
+                "definition": "spaceId"
+              }
+            ],
+            "type": "btree",
+            "isUnique": false,
+            "isPrimary": false
+          }
+        ],
+        "managed": true
+      }
+    }
+  ],
+  "warnings": [],
+  "migrationApiVersion": 1
+}

apps/todo/halkyon_todo_server/migrations/20261106183802735-filters/migration.sql

@@ -0,0 +1,114 @@
+BEGIN;
+
+--
+-- Function: gen_random_uuid_v7()
+-- Source: https://gist.github.com/kjmph/5bd772b2c2df145aa645b837da7eca74
+-- License: MIT (copyright notice included on the generator source code).
+--
+create or replace function gen_random_uuid_v7()
+returns uuid
+as $$
+begin
+  -- use random v4 uuid as starting point (which has the same variant we need)
+  -- then overlay timestamp
+  -- then set version 7 by flipping the 2 and 1 bit in the version 4 string
+  return encode(
+    set_bit(
+      set_bit(
+        overlay(uuid_send(gen_random_uuid())
+                placing substring(int8send(floor(extract(epoch from clock_timestamp()) * 1000)::bigint) from 3)
+                from 1 for 6
+        ),
+        52, 1
+      ),
+      53, 1
+    ),
+    'hex')::uuid;
+end
+$$
+language plpgsql
+volatile;
+
+--
+-- ACTION CREATE TABLE
+--
+CREATE TABLE "saved_filter" (
+    "id" uuid PRIMARY KEY DEFAULT gen_random_uuid_v7(),
+    "spaceId" bigint,
+    "keyId" text,
+    "payload" bytea NOT NULL,
+    "nonce" bytea
+);
+
+-- Indexes
+CREATE INDEX "saved_filter_space_idx" ON "saved_filter" USING btree ("spaceId");
+
+--
+-- ACTION CREATE FOREIGN KEY
+--
+ALTER TABLE ONLY "saved_filter"
+    ADD CONSTRAINT "saved_filter_fk_0"
+    FOREIGN KEY("spaceId")
+    REFERENCES "offline_sync_spaces"("id")
+    ON DELETE CASCADE
+    ON UPDATE NO ACTION;
+
+
+--
+-- MIGRATION VERSION FOR halkyon_todo
+--
+INSERT INTO "serverpod_migrations" ("module", "version", "timestamp")
+    VALUES ('halkyon_todo', '20261106183802735-filters', now())
+    ON CONFLICT ("module")
+    DO UPDATE SET "version" = '20261106183802735-filters', "timestamp" = now();
+
+--
+-- MIGRATION VERSION FOR halkyon_base
+--
+INSERT INTO "serverpod_migrations" ("module", "version", "timestamp")
+    VALUES ('halkyon_base', '20261026140329453-assistant-budgets', now())
+    ON CONFLICT ("module")
+    DO UPDATE SET "version" = '20261026140329453-assistant-budgets', "timestamp" = now();
+
+--
+-- MIGRATION VERSION FOR serverpod
+--
+INSERT INTO "serverpod_migrations" ("module", "version", "timestamp")
+    VALUES ('serverpod', '20260824182259319', now())
+    ON CONFLICT ("module")
+    DO UPDATE SET "version" = '20260824182259319', "timestamp" = now();
+
+--
+-- MIGRATION VERSION FOR serverpod_auth_idp
+--
+INSERT INTO "serverpod_migrations" ("module", "version", "timestamp")
+    VALUES ('serverpod_auth_idp', '20260924105404509', now())
+    ON CONFLICT ("module")
+    DO UPDATE SET "version" = '20260924105404509', "timestamp" = now();
+
+--
+-- MIGRATION VERSION FOR serverpod_offline_sync
+--
+INSERT INTO "serverpod_migrations" ("module", "version", "timestamp")
+    VALUES ('serverpod_offline_sync', '20260914143806119', now())
+    ON CONFLICT ("module")
+    DO UPDATE SET "version" = '20260914143806119', "timestamp" = now();
+
+--
+-- MIGRATION VERSION FOR halkyon_oidc
+--
+INSERT INTO "serverpod_migrations" ("module", "version", "timestamp")
+    VALUES ('halkyon_oidc', '20261023180644988', now())
+    ON CONFLICT ("module")
+    DO UPDATE SET "version" = '20261023180644988', "timestamp" = now();
+
+--
+-- MIGRATION VERSION FOR serverpod_auth_core
+--
+INSERT INTO "serverpod_migrations" ("module", "version", "timestamp")
+    VALUES ('serverpod_auth_core', '20260924105232991', now())
+    ON CONFLICT ("module")
+    DO UPDATE SET "version" = '20260924105232991', "timestamp" = now();
+
+
+COMMIT;

apps/todo/halkyon_todo_server/migrations/migration_registry.txt

@@ -24,3 +24,4 @@
 20261101000019144-projects
 20261101000604776-tasks
 20261101180755366-settings
+20261106183802735-filters