general improvements (#17)

* refactor(hooks): simplify hook execution with shared context

- [x] Extract BaseInput struct to eliminate duplicate fields across hooks
- [x] Create RunHook handler pattern for session-start and user-prompt
- [x] Create RunStatuslineHook for fast statusline rendering without worker startup
- [x] Add HookContext struct to pass port, project, CWD, SessionID to handlers
- [x] Add db/interface.go with ObservationReader/Writer interfaces
- [x] Add comprehensive conflict management tests in sqlite/conflict_test.go
- [x] Add vector client tests for Count, ModelVersion, NeedsRebuild, GetStaleVectors
- [x] Add FilterByThreshold helper tests for query result filtering
- [x] Make handlers_test more robust for network-dependent update checks
- [x] Update package versions in UI

* Move to GORM + general cleanup

* feat(mcp): add observation relations discovery and scoring integration

- [x] Add find_related_observations MCP tool for discovering related observations by confidence
- [x] Integrate scoring calculator and recalculator into MCP server initialization
- [x] Add pattern, relation, and session stores to MCP server dependencies
- [x] Register MCP server in Claude Code settings during plugin installation
- [x] Update install scripts (bash, PowerShell) to configure MCP server settings
- [x] Switch plugin manifest files to template-based versioning (plugin.json.tpl, marketplace.json.tpl)
- [x] Update all MCP server tests to pass new dependency parameters

internal/db/interface.go

@@ -0,0 +1,71 @@
+// Package db defines database interfaces for the claude-mnemonic stores.
+package db
+
+import (
+	"context"
+
+	"github.com/lukaszraczylo/claude-mnemonic/pkg/models"
+)
+
+// ObservationReader defines read operations for observations.
+type ObservationReader interface {
+	GetObservationByID(ctx context.Context, id int64) (*models.Observation, error)
+	GetObservationsByIDs(ctx context.Context, ids []int64, orderBy string, limit int) ([]*models.Observation, error)
+	GetRecentObservations(ctx context.Context, project string, limit int) ([]*models.Observation, error)
+	GetActiveObservations(ctx context.Context, project string, limit int) ([]*models.Observation, error)
+	GetAllRecentObservations(ctx context.Context, limit int) ([]*models.Observation, error)
+	GetAllObservations(ctx context.Context) ([]*models.Observation, error)
+	SearchObservationsFTS(ctx context.Context, query, project string, limit int) ([]*models.Observation, error)
+	GetObservationCount(ctx context.Context, project string) (int, error)
+}
+
+// ObservationWriter defines write operations for observations.
+type ObservationWriter interface {
+	StoreObservation(ctx context.Context, sdkSessionID, project string, obs *models.ParsedObservation, promptNumber int, discoveryTokens int64) (int64, int64, error)
+	DeleteObservations(ctx context.Context, ids []int64) (int64, error)
+}
+
+// ObservationStore combines read and write operations for observations.
+type ObservationStore interface {
+	ObservationReader
+	ObservationWriter
+}
+
+// SummaryReader defines read operations for summaries.
+type SummaryReader interface {
+	GetSummariesByIDs(ctx context.Context, ids []int64, orderBy string, limit int) ([]*models.SessionSummary, error)
+	GetRecentSummaries(ctx context.Context, project string, limit int) ([]*models.SessionSummary, error)
+	GetAllRecentSummaries(ctx context.Context, limit int) ([]*models.SessionSummary, error)
+	GetAllSummaries(ctx context.Context) ([]*models.SessionSummary, error)
+}
+
+// SummaryWriter defines write operations for summaries.
+type SummaryWriter interface {
+	StoreSummary(ctx context.Context, sdkSessionID, project string, summary *models.ParsedSummary, promptNumber int, discoveryTokens int64) (int64, int64, error)
+}
+
+// SummaryStore combines read and write operations for summaries.
+type SummaryStore interface {
+	SummaryReader
+	SummaryWriter
+}
+
+// PromptReader defines read operations for prompts.
+type PromptReader interface {
+	GetPromptsByIDs(ctx context.Context, ids []int64, orderBy string, limit int) ([]*models.UserPromptWithSession, error)
+	GetAllRecentUserPrompts(ctx context.Context, limit int) ([]*models.UserPromptWithSession, error)
+	GetAllPrompts(ctx context.Context) ([]*models.UserPromptWithSession, error)
+	GetRecentUserPromptsByProject(ctx context.Context, project string, limit int) ([]*models.UserPromptWithSession, error)
+	FindRecentPromptByText(ctx context.Context, claudeSessionID, promptText string, withinSeconds int) (int64, int, bool)
+}
+
+// PromptWriter defines write operations for prompts.
+type PromptWriter interface {
+	SaveUserPromptWithMatches(ctx context.Context, claudeSessionID string, promptNumber int, promptText string, matchedObservations int) (int64, error)
+}
+
+// PromptStore combines read and write operations for prompts.
+type PromptStore interface {
+	PromptReader
+	PromptWriter
+}