Summary

Add a new date_only collection field type that stores dates without time components, giving users granular control over whether a field captures a full datetime or just a date. The existing date type remains unchanged as datetime.

Changes

• Add date_only to CollectionFieldType union and isDateFieldType helper for DRY type checks
• Render date_only inputs as <input type="date"> (vs datetime-local for datetime fields)
• Add clampDateInputValue utility to validate and clamp year/month/day while typing
• Add formatDateOnly display function that formats without timezone conversion
• Filter format presets for date_only fields to exclude time-related options
• Update conditional visibility, collection filters, CSV import/export, and MCP tool schemas
• Rename date label to "Date & Time" and label date_only as "Date" across UI

Test plan

• Create a collection with both a "Date & Time" field and a "Date" field
• Add items — verify datetime input shows time picker, date input does not
• Verify CMS table displays datetime with time and date without time
• Set a default value on a date_only field in field settings
• Use inline variables with both field types — confirm format presets exclude time options for date_only
• Add conditional visibility rules using a date_only field
• Add collection filter rules using a date_only field
• Import CSV with date_only values — verify correct parsing
• Type partial dates (e.g. 5-digit year, month > 12) — verify clamping works
• Preview and publish a page using date_only fields — verify correct rendering

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