Seed canonical morph types and regenerate search index

[myieye]

Summary

This PR ensures all canonical morph type definitions are seeded into new and existing CRDT projects, and regenerates the full-text search index to include morph-type prefix/postfix tokens in searchable headwords.

Key Changes

• Added canonical morph type definitions (CanonicalMorphTypes.cs): Defines 20 standard morph types matching FieldWorks/LibLCM specifications with verified GUIDs, names, abbreviations, and affixes. Uses frozen dictionary for immutability and performance.

• Automatic seeding on project creation and migration: Modified CrdtProjectsService and CurrentProjectService to seed canonical morph types when:

  • Creating a new project with SeedNewProjectData: true
  • Opening an existing project that lacks morph types (via MigrateDb)

• Search index regeneration: Added migration 20260318120000_RegenerateSearchTableForMorphTypes that clears the EntrySearchRecord table to force FTS rebuild with updated morph-type affixes.

• Legacy snapshot patching: Updated CrdtFwdataProjectSyncService to patch legacy snapshots missing morph types during sync operations, preventing duplicates when syncing with FwData.

• Comprehensive test coverage: Added MorphTypeSeedingTests verifying:

  • New projects receive all canonical morph types
  • Existing projects without morph types get seeded on open
  • Seeding is idempotent (no duplicates on repeated opens)
  • All MorphTypeKind enum values are covered

  Added integration test in Sena3SyncTests validating canonical definitions match FwData morph types.

• Regression test versioning: Updated RegressionTestHelper to version 3 for snapshot compatibility.

Implementation Details

• Morph types are seeded with fixed GUIDs matching SIL.LCModel constants, ensuring consistency across projects and with FieldWorks data.
• Seeding uses PreDefinedData.PredefinedMorphTypes() to integrate with existing predefined data infrastructure.
• Search index regeneration is safe: FTS table is lazily rebuilt on next query if cleared.
• Sync operations detect and skip seeding if morph types already exist, preventing duplicates in legacy workflows.

https://claude.ai/code/session_01WDKE2vXP4gjMWjfn4cmL4p

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UI unit Tests

  1 files  ±0   54 suites  ±0   25s ⏱️ -1s
140 tests ±0  140 ✅ ±0  0 💤 ±0  0 ❌ ±0 
207 runs  ±0  207 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit f8f4cfe. ± Comparison against base commit c62728c.

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Build	Status	Details	Updated (UTC)
default (Inspect)	✅ No changes detected	-	Mar 24, 2026, 3:44 PM