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.

analysis_options.yaml

@@ -0,0 +1,20 @@
+# Shared analyzer config for the Tane workspace.
+# Per-package files (packages/*/analysis_options.yaml,
+# apps/*/analysis_options.yaml) include this and may add rules.
+include: package:flutter_lints/flutter.yaml
+
+analyzer:
+  errors:
+    # Generated code must never fail the build.
+    invalid_annotation_target: ignore
+  exclude:
+    - "**/*.g.dart"
+    - "**/*.drift.dart"
+    - "apps/app_seeds/lib/i18n/strings.g.dart"
+
+linter:
+  rules:
+    # Enforce the "no hardcoded user-facing strings" rule at review time
+    # (full enforcement is a CI grep in test/; see docs/design/testing.md).
+    prefer_single_quotes: true
+    require_trailing_commas: true