fix(examples): add pool-v2 account to pumpswap, repair geyser listener

PumpSwap (manual_buy_pumpswap.py / manual_sell_pumpswap.py)
  - Real on-chain pump-swap buys use 24 accounts; the IDL is incomplete
    (lists 23). Missing 24th account is pool-v2 PDA, derived from seed
    ["pool-v2", base_mint] under the pump-amm program.
  - Without it, pump-amm throws AnchorError 6023 (Overflow) at buy.rs:400/414
    after the trade transfers complete (the source of the earlier "pre-existing
    overflow" — was actually a missing account, not a math bug).
  - find_pool_v2(base_mint) added; appended to both buy and sell account lists
    after fee_program. The April-28 breaking-fee accounts (still gated behind
    INCLUDE_BREAKING_FEE_ACCOUNTS) come after pool-v2 — matching the doc's
    "All accounts till bonding-curve-v2 and pool-v2 remain the same."
  - AsyncClient timeout bumped to 120s so the heavy getProgramAccounts pool
    lookup doesn't time out on slower RPC paths.
  - Live-verified on mainnet with 9PwadsGz...pump:
      buy   2xgdJJsDMzoMyxJzrCATKwGfpX7M... err=None (24 accounts)
      sell  4vdBkGpCMQYEWncj5k1suGzKPUMQ... err=None (24 accounts)

manual_buy_geyser.py
  - Fixes IndexError when create tx references ALT-loaded keys
    (matches the same fix applied to manual_buy.py).
  - Re-enables the 15s sleep + on-chain price/fee_recipient lookup that
    were commented out for testing — needed for buys on real pools.
  - Live-verified: 45wSgX2Pu1LLZWLgu3e9qdhRaGJjqwMqQP5HdeV7zMBqNXziB2uEgxQd5bAqvAhBLFnAqzbuK3LAWowhxZxdemJ
    (18-account buy, err=None) on Token-2022 cashback-enabled INSIDER mint.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

learning-examples/pumpswap/manual_buy_pumpswap.py

@@ -283,6 +283,16 @@ def find_fee_config() -> Pubkey:
     return derived_address
 
 
+def find_pool_v2(base_mint: Pubkey) -> Pubkey:
+    """Derive the PDA for the pool-v2 account (per-base-mint), required as the
+    last "pre-upgrade" account on every pump-swap buy/sell."""
+    derived_address, _ = Pubkey.find_program_address(
+        [b"pool-v2", bytes(base_mint)],
+        PUMP_AMM_PROGRAM_ID,
+    )
+    return derived_address
+
+
 # ============================================================================
 # Mayhem Mode Fee Handling
 # ============================================================================
@@ -518,6 +528,8 @@ async def buy_pump_swap(
         AccountMeta(pubkey=user_volume_accumulator, is_signer=False, is_writable=True),
         AccountMeta(pubkey=find_fee_config(), is_signer=False, is_writable=False),
         AccountMeta(pubkey=PUMP_FEE_PROGRAM, is_signer=False, is_writable=False),
+        # pool-v2 PDA (per-base-mint) — the last "pre-upgrade" account.
+        AccountMeta(pubkey=find_pool_v2(base_mint), is_signer=False, is_writable=False),
     ]
     # 2 new accounts required from 2026-04-28 16:00 UTC pump-swap program upgrade,
     # AFTER pool-v2: breaking-upgrade fee recipient (readonly, second-to-last) and
@@ -643,9 +655,9 @@ async def buy_pump_swap(
 
 async def main() -> None:
     """Execute the complete buy flow."""
-    sol_amount_to_spend = 0.000001  # Amount of SOL to spend on the purchase
+    sol_amount_to_spend = 0.001  # Amount of SOL to spend on the purchase
 
-    async with AsyncClient(RPC_ENDPOINT) as client:
+    async with AsyncClient(RPC_ENDPOINT, timeout=120) as client:
         # Step 1: Find the pool address for our token
         market_address = await get_market_address_by_base_mint(
             client, TOKEN_MINT, PUMP_AMM_PROGRAM_ID

learning-examples/pumpswap/manual_sell_pumpswap.py

@@ -236,6 +236,16 @@ def find_fee_config() -> Pubkey:
     return derived_address
 
 
+def find_pool_v2(base_mint: Pubkey) -> Pubkey:
+    """Derive the PDA for the pool-v2 account (per-base-mint), required as the
+    last "pre-upgrade" account on every pump-swap buy/sell."""
+    derived_address, _ = Pubkey.find_program_address(
+        [b"pool-v2", bytes(base_mint)],
+        PUMP_AMM_PROGRAM_ID,
+    )
+    return derived_address
+
+
 # ============================================================================
 # Mayhem Mode Fee Handling
 # ============================================================================
@@ -506,6 +516,8 @@ async def sell_pump_swap(
         ),
         AccountMeta(pubkey=find_fee_config(), is_signer=False, is_writable=False),
         AccountMeta(pubkey=PUMP_FEE_PROGRAM, is_signer=False, is_writable=False),
+        # pool-v2 PDA (per-base-mint) — the last "pre-upgrade" account.
+        AccountMeta(pubkey=find_pool_v2(base_mint), is_signer=False, is_writable=False),
     ]
     # 2 new accounts required from 2026-04-28 16:00 UTC pump-swap program upgrade,
     # AFTER pool-v2: breaking-upgrade fee recipient (readonly, second-to-last) and
@@ -571,7 +583,7 @@ async def sell_pump_swap(
 
 async def main() -> None:
     """Execute the complete sell flow."""
-    async with AsyncClient(RPC_ENDPOINT) as client:
+    async with AsyncClient(RPC_ENDPOINT, timeout=120) as client:
         # Step 1: Find the pool address for our token
         market_address = await get_market_address_by_base_mint(
             client, TOKEN_MINT, PUMP_AMM_PROGRAM_ID