[Feature] Add a pool deposit schedule calendar view with iCal/Google Calendar export

[Sendi0011]

Getting Started

1. Fork the repository: https://github.com/JointSave-org/Joint_Save
2. Clone your fork:

git clone https://github.com/<your-username>/Joint_Save.git
cd Joint_Save

3. Create a new branch:

git checkout -b feat/pool-deposit-calendar

---

Overview

Rotational pool members currently have no way to see their upcoming deposit obligations at a glance across all their pools. The only way to know when a deposit is due is to open each pool's detail page individually and check the round deadline. This becomes especially painful for users in multiple rotational pools — they must manually track when each pool's next round starts and when their deposit is due.

This issue adds a calendar view to the dashboard that shows all upcoming deposit obligations across pools, with the ability to export individual events to iCal/Google Calendar.

Requirements

New Component: DepositCalendar

• Add a new section or tab within the "My Groups" dashboard tab (or a standalone view toggle)
• Monthly calendar view showing deposit deadlines as events
• Each event shows: pool name, deposit amount, pool type badge, and time remaining
• Color coding: green (>7 days away), yellow (2-7 days), red (<2 days or overdue)
• Clicking an event opens the pool detail page directly

Data Source

• For each rotational pool the user is a member of, compute the next deposit deadline from the on-chain next_payout_time field
• Cross-reference with the has_deposited map to show which deposits are already completed (marked with a checkmark) vs pending
• Cache computed deadlines alongside the existing pool data in PoolDataProvider to avoid redundant RPC calls

iCal Export

• Add an "Export to Calendar" button per pool and a "Export All" button
• Generate a valid .ics file containing VEVENT entries for each upcoming deposit deadline
• Each event should include:
  • Summary: "Deposit due: [pool name]"
  • Description: "Deposit [amount] [token] to [pool name]. Pool contract: [address]"
  • Start time: the deadline timestamp
  • Duration: 1 hour (all-day event if no specific time)
  • URL: link to the pool detail page
• Use the ical-generator library (check if already a dependency, otherwise install it)

Mobile Responsiveness

• On mobile (< 768px), switch from monthly grid to a list/timeline view of upcoming deposits sorted by deadline
• Swipeable or scrollable list with pool name, amount, and deadline

Empty State

• When the user has no rotational pools, show a friendly empty state: "You don't have any rotational pools yet. Create or join one to see your deposit schedule here."

Acceptance Criteria

• Calendar view renders on the dashboard with deposit deadlines shown as events
• Events are color-coded by urgency (green/yellow/red)
• Clicking an event navigates to the correct pool detail page
• "Export to Calendar" generates a valid .ics file that imports correctly into Google Calendar and Apple Calendar
• "Export All" includes all upcoming deposits across all pools
• Mobile view switches to a list/timeline layout
• Empty state displays when no rotational pools exist
• Calendar correctly reflects deposits already made (shows checkmark)

[mxrtins04]

Hi maintainer, can i be assigned this issue pleasee?

[Hafgans-oss]

Hello Maintainer, I'd like to work on this issue. I have experience with frontend development and state management, and I can implement this. Please consider assigning it to me.

[onyekachi66]

I am confident that I can implement this issue

[grantfox-oss]

🦊 GrantFox — @onyekachi66 has been assigned to this issue as part of the Official Campaign | FWC26 campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #186)
2. Your PR will be reviewed by the JointSave-org maintainers

Good luck! Track your progress on GrantFox.

[CHKM001]

Hii
I can get this done for you, Please assign
Thanks

[BigJohn-dev]

Allow me fix this quickly