[Bug] createStoryline reverts: token symbol collision on MCV2_Bond

[realproject7]

Problem

The new StoryFactory (0x6B8d...605d) starts at storylineCount = 0, so the first createStoryline tries to create a token with symbol PLOT-1. But the old StoryFactory (0x05C4...b474) already created PLOT-1, PLOT-2, PLOT-3 on MCV2_Bond. MCV2_Bond rejects duplicate symbols, causing the tx to revert.

Fix

Change the token symbol prefix from PLOT- to PLT- in StoryFactory.sol line 113:

// OLD:
symbol: string(abi.encodePacked("PLOT-", _uint2str(storylineId)))
// NEW:
symbol: string(abi.encodePacked("PLT-", _uint2str(storylineId)))

This is a testnet-only workaround. On mainnet (#41), the symbol should be PLOT- (no collision since it's a fresh deploy).

Steps

1. Update plotlink-contracts/src/StoryFactory.sol line 113 — change "PLOT-" to "PLT-"
2. Update tests if any assert on the symbol format
3. forge test
4. Deploy to Base Sepolia: forge script script/DeployBaseSepolia.s.sol --rpc-url base_sepolia --broadcast
5. Update plotlink/lib/contracts/constants.ts — new STORY_FACTORY address
6. Update plotlink/packages/sdk/src/constants.ts — new STORY_FACTORY_ADDRESS
7. Verify on Basescan

Deployment info

• Contract repo: /Users/cho/Projects/plotlink-contracts/
• Deploy script: script/DeployBaseSepolia.s.sol
• Deployer key: plotlink-contracts/.env (DEPLOYER_PRIVATE_KEY)
• Current contract: 0x6B8d38af1773dd162Ebc6f4A8eb923F3c669605d
• Chain: Base Sepolia (84532)

Important

• Do NOT change the ABI — only the symbol prefix changes, no ABI impact
• After deploy, operator will update env and run migration to re-tag data

Acceptance Criteria

• Symbol prefix changed to PLT-
• Tests pass
• New contract deployed to Base Sepolia
• Constants updated in both plotlink and SDK
• createStoryline no longer reverts