add: ui functionality for bulk add + deployed dev env contracts

[sirpy]

Description

#314

Summary by Sourcery

Enable bulk member management in the app and update development Celo deployment configuration and contracts.

New Features:

• Add bulk member addition UI and logic allowing comma- or newline-separated wallet addresses to be added in one transaction for UBI and Direct Payments pools.
• Expose success messaging and parsed address counts in the member management flow for clearer user feedback.
• Introduce shared validation utilities for pool metadata and Direct Payments pool settings.

Enhancements:

• Memoize the GoodCollective SDK instance in member management hooks to avoid redundant instantiation and reuse it across add/remove operations.

Build:

• Switch the development Celo Hardhat RPC endpoint to Ankr and refresh deployed contract artifacts and release deployment metadata for that network.

[sourcery-ai]

Hey - I've found 2 issues, and left some high level feedback:

• In validatePoolSettings, UBIPoolSettings is referenced but never imported/defined and settings.validEvents should likely be directPaymentSettings.validEvents, which will currently cause type or runtime errors.
• The poolType discriminator in validatePoolSettings uses the string 'DirectPayments', which is inconsistent with the 'DIRECT'/'UBI' values used elsewhere (e.g., in useMemberManagement), so this branch may never execute as intended.
• In ManageCollectivePage, the TextArea placeholder uses the HTML entity 
 for a newline; in this JSX/NativeBase context you likely want an actual newline ("\n" or {"\n"}) to avoid rendering the literal entity text.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- In `validatePoolSettings`, `UBIPoolSettings` is referenced but never imported/defined and `settings.validEvents` should likely be `directPaymentSettings.validEvents`, which will currently cause type or runtime errors.
- The `poolType` discriminator in `validatePoolSettings` uses the string `'DirectPayments'`, which is inconsistent with the `'DIRECT'`/`'UBI'` values used elsewhere (e.g., in `useMemberManagement`), so this branch may never execute as intended.
- In `ManageCollectivePage`, the `TextArea` placeholder uses the HTML entity `
` for a newline; in this JSX/NativeBase context you likely want an actual newline (`"\n"` or `{"\n"}`) to avoid rendering the literal entity text.

## Individual Comments

### Comment 1
<location> `packages/app/src/utils/validation.ts:37` </location>
<code_context>
+    if (directPaymentSettings.validEvents.length === 0) {
+      errors.validEvents = 'At least one valid event type is required';
+    }
+    if (directPaymentSettings.rewardPerEvent.length !== settings.validEvents.length) {
+      errors.rewardPerEvent = 'Must specify reward amount for each event type';
+    }
</code_context>

<issue_to_address>
**issue (bug_risk):** The reference to `settings.validEvents` is likely a bug and should use `directPaymentSettings.validEvents` instead.

In `validatePoolSettings`, `settings` is not in scope, so this line will fail at type-check or runtime. This should compare `rewardPerEvent.length` to `directPaymentSettings.validEvents.length` instead.
</issue_to_address>

### Comment 2
<location> `packages/app/src/pages/ManageCollectivePage.tsx:426` </location>
<code_context>
-                  </HStack>
+                  <Text fontWeight="600">Wallet Addresses</Text>
+                  <TextArea
+                    placeholder="0xabc...123, 0xdef...456&#10;0xghi...789"
+                    value={memberManagement.memberInput}
+                    onChangeText={memberManagement.setMemberInput}
</code_context>

<issue_to_address>
**issue (bug_risk):** The use of `&#10;` in the placeholder likely won’t render as a newline in React Native and may show the raw entity.

Because React Native doesn’t parse HTML entities in JSX strings, this will likely render the literal `&#10;` instead of a newline. To get a line break in the placeholder, use an actual newline in a template string or `{"\n"}` between the examples (e.g., `"0xabc...123, 0xdef...456\n0xghi...789"`).
</issue_to_address>

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[sourcery-ai]

issue (bug_risk): The reference to settings.validEvents is likely a bug and should use directPaymentSettings.validEvents instead.

In validatePoolSettings, settings is not in scope, so this line will fail at type-check or runtime. This should compare rewardPerEvent.length to directPaymentSettings.validEvents.length instead.

[sourcery-ai]

issue (bug_risk): The use of 
 in the placeholder likely won’t render as a newline in React Native and may show the raw entity.

Because React Native doesn’t parse HTML entities in JSX strings, this will likely render the literal 
 instead of a newline. To get a line break in the placeholder, use an actual newline in a template string or {"\n"} between the examples (e.g., "0xabc...123, 0xdef...456\n0xghi...789").