feat(block1): inventory walking skeleton + first quick-add slice

Stand up the Tanemaki monorepo and the first end-to-end vertical slice of
Block 1 (offline, encrypted inventory): add a seed → see it in a categorized,
searchable list → it persists → reopen and it's still there.

Architecture (state management like G1nkgo, adapted to Tane's reality):
- flutter_bloc (Cubit-first), but the encrypted Drift DB is the single source
  of truth; cubits stream from repositories (no hydrated_bloc/Hive, which would
  write plaintext at rest).
- get_it composition root; go_router; slang i18n (ES/EN, Weblate-friendly JSON).

Workspace & core:
- pub workspace: packages/commons_core (pure Dart) + apps/app_seeds (Flutter).
- commons_core primitives: UUIDv7 IdGen, Hybrid Logical Clock, Quantity value
  type (+ plant-aware QuantityKind), IdentityService root-seed stub.

Data & security:
- Drift schemaVersion=1 with all 10 Block-1 tables + common CRDT columns
  (HLC updated_at, last_author, tombstones); Movement append-only.
- SQLCipher via an injectable executor that refuses to open a plaintext DB;
  DB key + root seed in the OS keystore (separate secrets).
- Exported drift_schema_v1.json + migration scaffold.

Tests (near-TDD; nothing merges without tests):
- commons_core units (24), Drift migration test, "no plaintext at rest"
  security guard (runs where SQLCipher is present, skips otherwise),
  repository, widget, full quick-add flow, file-reopen persistence, and a
  no-hardcoded-strings i18n guard. GitLab CI: format + analyze + test + coverage.

Follow-on Block-1 stories (item detail/edit, species catalog, germination UI)
and all of Block 2 remain out of scope.

apps/app_seeds/test/i18n/no_hardcoded_strings_test.dart

@@ -0,0 +1,30 @@
+import 'dart:io';
+
+import 'package:flutter_test/flutter_test.dart';
+
+/// Enforces the golden rule "user-facing strings are NEVER hardcoded". Scans
+/// lib/ for `Text('literal')` / `Text("literal")` with an alphabetic literal —
+/// all UI text must come from slang (`t.…`). Variables like `Text(item.label)`
+/// and symbols like `Text('?')` are allowed.
+void main() {
+  test('no hardcoded Text() string literals in lib/', () {
+    final textLiteral = RegExp('''Text\\(\\s*['"][A-Za-z]''');
+    final offenders = <String>[];
+
+    for (final entity in Directory('lib').listSync(recursive: true)) {
+      if (entity is! File || !entity.path.endsWith('.dart')) continue;
+      if (entity.path.contains('/i18n/') || entity.path.endsWith('.g.dart')) {
+        continue; // generated / translation sources
+      }
+      if (textLiteral.hasMatch(entity.readAsStringSync())) {
+        offenders.add(entity.path);
+      }
+    }
+
+    expect(
+      offenders,
+      isEmpty,
+      reason: 'Hardcoded Text() literals found (use t.…): $offenders',
+    );
+  });
+}