SubMiner/backlog/tasks/task-173 - Remove-Avg-Frequency-metric-from-Vocabulary-tab-summary-cards.md

id, title, status, assignee, created_date, updated_date, labels, milestone, dependencies, priority, ordinal

id	title	status	assignee	created_date	updated_date	labels	milestone	dependencies	priority	ordinal
TASK-173	Remove Avg Frequency metric from Vocabulary tab summary cards	Done		2026-03-15 00:13	2026-03-16 05:13	stats ui	m-1		low	17500

Description

User requested removing the Avg Frequency card/metric because it is not useful. Remove the UI card and stop computing/storing the summary field in dashboard summary shaping code.

Acceptance Criteria

• #1 Vocabulary tab no longer renders an "Avg Frequency" stat card.
• #2 Vocabulary summary model no longer exposes or computes averageFrequency.
• #3 Typecheck/tests covering dashboard summary and vocabulary tab pass.

Final Summary

Removed the Vocabulary tab "Avg Frequency" card and deleted the corresponding averageFrequency field from VocabularySummary and buildVocabularySummary.

Verification run:

• bun test stats/src/lib/dashboard-data.test.ts
• bun run typecheck
• bun run test:fast
• bun run build
• bun run test:env
• bun run test:smoke:dist