Support meeting preparation, scheduling and follow-through

[asim]

Priority: P1 (build on the foundation).

Calendar connectivity should help the user organise and prepare their day, not merely list events.

Acceptance criteria

• Prepare a meeting summary from attendees, relevant correspondence, linked documents and previous decisions, with sources.
• Suggest available times respecting working hours, timezone, conflicts and travel buffers.
• Preview invitation/reschedule details and attendees before any action requiring authorization.
• Turn supplied meeting notes or an authorised transcript into decisions and proposed tasks.
• Persist confirmed commitments with owners and deadlines and link them to the meeting.
• Test recurring events, DST, unavailable participants, missing data and duplicate invitations; never claim attendee acceptance without evidence.

Dependencies and boundaries

Depends on connected calendar/email, personal context, trustworthy tasks and action permissions. Start with preparation and scheduling; recording is not implied.

Implementation approach

Audit current main first: some foundations and recent fixes already exist. Close remaining user-visible gaps and preserve working behaviour. This issue records the personal-assistant product backlog, not a claim that every underlying capability is absent. Add focused regression coverage for the behaviour changed.