fix: remove Node Guru references after provider shutdown (#435)

* fix: remove Node Guru references after provider shutdown

Node Guru has shut down all of their Babylon Genesis services
(RPC, gRPC, LCD, and the babylon.explorers.guru / testnet.babylon.explorers.guru
explorers). The mainnet archive endpoint at babylon-archive.nodes.guru is
already returning HTTP 503, which broke the live co-staking rewards
calculator on the docs site.

Changes:
- Drop the "Nodes Guru" blocks from the mainnet/testnet endpoint tables in
  node_information.mdx
- Drop the Node Guru rows from explorers.mdx and the proposals link from
  reviewing_proposals.mdx; also drop NodeStake from the testnet explorers
  row, because its testnet integration currently renders the page but
  reports "babylon-testnet disconnected" with height 0
- Replace `*.nodes.guru` URLs in the BABY staking CLI, finality provider,
  IBC relayer, and dApp deployment guides with their Polkachu equivalents
- Switch CoStakingCalculator.jsx to https://babylon-archive-api.polkachu.com
  (verified all 4 endpoints — current_rewards, annual_provisions,
  incentive/params, costaking/v1/params — return valid JSON)
- Update server URLs in the OpenAPI swagger files
  (babylon-grpc-openapi3.yaml, comet-bft-rpc-openapi3.yaml)
- Sync the llms-ctx.txt and llms-full.txt LLM-discoverability artifacts
  with the same removals so AI assistants stop suggesting dead endpoints

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

* fix: replace dead/mislabeled NodeStake genesis links with Polkachu

The NodeStake genesis URL `https://ss.babylon.nodestake.org/genesis.json`
was listed for both mainnet and testnet but the host doesn't resolve
(HTTP 000). The testnet "State Snapshot" entry pointed at
`https://nodestake.org/babylon`, which is the mainnet snapshot page —
there's no NodeStake testnet variant.

Replaces those three references with Polkachu equivalents
(verified mainnet genesis returns chain_id `bbn-1`, testnet returns
`bbn-test-6`, and the testnet snapshot page lists a recent height).
The mainnet "State Snapshot" NodeStake link is kept since it works.

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

* fix: remove NodeStake mainnet explorer (degraded UX for Babylon)

NodeStake's mainnet explorer at explorer.nodestake.org/babylon does
return HTTP 200 and renders block height, but it is sourced from
ITRocket's API (`babylon-mainnet-api.itrocket.net`, moniker
`itrocket_rpc`) rather than NodeStake's own infrastructure, and the
UI is missing every Babylon-specific section — no Finality Providers,
no BTC Delegations, no Epochs, no Committee. For a docs site whose
audience expects BTC-staking-aware explorers, MintScan and Xangle
already cover that need with full Babylon dashboards.

Also swaps the mainnet "State Snapshot" link from `nodestake.org/babylon`
to Polkachu's snapshot page so a single working provider remains for
both genesis and snapshots.

No NodeStake faucet reference exists in the repo (verified by grep).
NodeStake's faucet subdomains do not resolve.

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

* fix: replace missed Node Guru explorer link in validator_setup

The "Important Links" section in validator_setup.mdx still pointed to
https://babylon.explorers.guru/ — missed in the original sweep because
the regex `explore\.guru` required a literal dot directly after
"explore" and so didn't match `explorers.guru`. Other files were caught
only because they also had the text "Node Guru" near the URL; this line
was a bare URL, so it slipped through.

Swap to MintScan as the canonical mainnet explorer link, consistent
with the explorers.mdx table.

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

---------

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

Author: web3jenks

docs/developers/babylon_genesis_chain/chain_information.mdx

@@ -19,8 +19,8 @@ import TabItem from '@theme/TabItem';
 | Binary Name | `babylond` |
 | Version | `v1.0.1` |
 | Genesis Date | `2025-03-15` |
-| Genesis File | [Babylon Github](https://github.com/babylonlabs-io/networks/blob/main/bbn-1/network-artifacts/genesis.json) [NodeStake](https://ss.babylon.nodestake.org/genesis.json) |
-| State Snapshot | [Babylon Github](https://github.com/babylonlabs-io/networks/blob/main/bbn-1/network-artifacts/bbn-1.tar.gz) (height 226) [NodeStake](https://nodestake.org/babylon) |
+| Genesis File | [Babylon Github](https://github.com/babylonlabs-io/networks/blob/main/bbn-1/network-artifacts/genesis.json) [Polkachu](https://snapshots.polkachu.com/genesis/babylon/genesis.json) |
+| State Snapshot | [Babylon Github](https://github.com/babylonlabs-io/networks/blob/main/bbn-1/network-artifacts/bbn-1.tar.gz) (height 226) [Polkachu](https://www.polkachu.com/tendermint_snapshots/babylon) |
 | Seed Nodes | [Babylon Github](https://github.com/babylonlabs-io/networks/blob/main/bbn-1/network-artifacts/seeds.txt) |
 | Peers | [Babylon Github](https://github.com/babylonlabs-io/networks/blob/main/bbn-1/network-artifacts/peers.txt) |
 
@@ -33,7 +33,7 @@ import TabItem from '@theme/TabItem';
 | Binary Name | `babylond` |
 | Version | `v2.3.1` |
 | Genesis Date | `2025-10-12` |
-| Genesis File | [Babylon Github](https://github.com/babylonlabs-io/networks/blob/main/bbn-test-6/network-artifacts/genesis.json) [NodeStake](https://ss.babylon.nodestake.org/genesis.json)|
-| State Snapshot | [Babylon Github](https://github.com/babylonlabs-io/networks/blob/main/bbn-test-6/network-artifacts/bbn-test-6.tar.gz) [NodeStake](https://nodestake.org/babylon) |
+| Genesis File | [Babylon Github](https://github.com/babylonlabs-io/networks/blob/main/bbn-test-6/network-artifacts/genesis.json) [Polkachu](https://snapshots.polkachu.com/testnet-genesis/babylon/genesis.json)|
+| State Snapshot | [Babylon Github](https://github.com/babylonlabs-io/networks/blob/main/bbn-test-6/network-artifacts/bbn-test-6.tar.gz) [Polkachu](https://www.polkachu.com/testnets/babylon/snapshots) |
 | Seed Nodes | [Babylon Github](https://github.com/babylonlabs-io/networks/tree/main/bbn-test-6/network-artifacts/seeds.txt) |
 | Peers | [Babylon Github](https://github.com/babylonlabs-io/networks/tree/main/bbn-test-6/network-artifacts/peers.txt) |

docs/developers/babylon_genesis_chain/dapps/smart_contract_deployment.mdx

@@ -72,7 +72,7 @@ Verify the configuration:
 echo $homeDir, $chainId, $feeToken, $key, $nodeUrl, $apiUrl
 
 # Expected output:
-/Users/<your_username>/.babylond, bbn-test-6, ubbn, test-key, https://babylon-testnet-rpc.nodes.guru, https://babylon-testnet-api.nodes.guru
+/Users/<your_username>/.babylond, bbn-test-6, ubbn, test-key, https://babylon-testnet-rpc.polkachu.com, https://babylon-testnet-api.polkachu.com
 ```
 
 

docs/developers/babylon_genesis_chain/explorers/explorers.mdx

@@ -16,8 +16,6 @@ Block scanners for Phase 2 Babylon Genesis Mainnet (`bbn-1`).
 | Service | URL |
 |---------|-----|
 | [MintScan](https://www.mintscan.io/babylon) | `https://www.mintscan.io/babylon` |
-| [Node Guru](https://babylon.explorers.guru/) | `https://babylon.explorers.guru/` |
-| [NodeStake](https://explorer.nodestake.org/babylon) | `https://explorer.nodestake.org/babylon` |
 | [Xangle](https://babylon-explorer.xangle.io/mainnet/home) | `https://babylon-explorer.xangle.io/mainnet/home` |
 
 
@@ -28,6 +26,4 @@ Block scanners for Phase 2 Babylon Genesis Testnet (`bbn-test-6`).
 | Service | URL |
 |---------|-----|
 | [MintScan](https://www.mintscan.io/babylon-testnet) | `https://www.mintscan.io/babylon-testnet` |
-| [Node Guru](https://testnet.babylon.explorers.guru/) | `https://testnet.babylon.explorers.guru/` |
-| [NodeStake](https://explorer.nodestake.org/babylon-testnet) | `https://explorer.nodestake.org/babylon-testnet` |
 | [Xangle](https://babylon-explorer.xangle.io/testnet/home) | `https://babylon-explorer.xangle.io/testnet/home` |

docs/developers/babylon_genesis_chain/node_information.mdx

@@ -13,15 +13,6 @@ import TabItem from '@theme/TabItem';
 
 Endpoints for Phase 2 Babylon Genesis Mainnet (`bbn-1`).
 
-**Nodes Guru**
-| Endpoint Type | URL |
-|-------------|----------|
-| RPC (Pruned) | `https://babylon.nodes.guru/rpc` |
-| RPC (Archive) | `https://babylon-archive.nodes.guru/rpc` |
-| LCD (Pruned) | `https://babylon.nodes.guru/api` |
-| LCD (Archive) | `https://babylon-archive.nodes.guru/api` |
-| gRPC (Pruned) | `babylon.nodes.guru:443` |
-
 **Polkachu**
 | Endpoint Type | URL |
 |-------------|----------|
@@ -37,18 +28,9 @@ Endpoints for Phase 2 Babylon Genesis Mainnet (`bbn-1`).
 Endpoints for Phase 2 Babylon Genesis Testnet (`bbn-test-6`).
 
 
-**Nodes Guru**
-| Endpoint Type | URL |
-|-------------|----------|
-| RPC | `https://babylon-testnet-rpc.nodes.guru` |
-| RPC Archive | `https://babylon-testnet-rpc-archive-1.nodes.guru` |
-| LCD | `https://babylon-testnet-api.nodes.guru` |
-| LCD Archive | `https://babylon-testnet-api-archive-1.nodes.guru` |
-| gRPC | `https://babylon-testnet-grpc.nodes.guru` |
-
 **Polkachu**
 | Endpoint Type | URL |
 |-------------|----------|
 | RPC | `https://babylon-testnet-rpc.polkachu.com` |
 | LCD | `https://babylon-testnet-api.polkachu.com` |
-| gRPC | `http://babylon-testnet-grpc.polkachu.com:20690` |
+| gRPC | `babylon-testnet-grpc.polkachu.com:20690` |

docs/guides/overview/babylon_genesis/governance/reviewing_proposals/reviewing_proposals.mdx

@@ -108,7 +108,6 @@ Remember that if >33.4% (1/3) of votes are "No With Veto," the proposal is rejec
 - [Babylon Foundation Forum](https://forum.babylon.foundation/) - For a formal and structure discussion on proposals  
 - Babylon Genesis Chain Explorer - For checking proposal status and voting history  
   - [Xangle Explorer - Proposals](https://babylon-explorer.xangle.io/testnet/proposals)
-  - [Node Guru Explorer - Proposals](https://testnet.babylon.explorers.guru/proposals)
   - [Mintscan Explorer - Proposals](https://www.mintscan.io/babylon-testnet/proposals)  
 - [Babylon Discord](https://discord.com/invite/babylonglobal) - For informal community discussions  
 - [GitHub](https://github.com/babylonlabs-io) - For reviewing code if the proposal involves software changes  

docs/operators/babylon_validators/ibc_relayer_setup.mdx

@@ -114,8 +114,8 @@ buckets = 10
 [[chains]]
 id = 'bbn-test-6'
 type = "CosmosSdk"
-rpc_addr = 'https://babylon-testnet-rpc.nodes.guru'
-grpc_addr = 'https://babylon-testnet-grpc.nodes.guru'
+rpc_addr = 'https://babylon-testnet-rpc.polkachu.com'
+grpc_addr = 'http://babylon-testnet-grpc.polkachu.com:20690'
 rpc_timeout = "10s"
 trusted_node = false
 account_prefix = "bbn"
@@ -136,7 +136,7 @@ sequential_batch_tx = false
 
 [chains.event_source]
 mode = "push"
-url = "wss://babylon-testnet-rpc.nodes.guru/websocket"
+url = "wss://babylon-testnet-rpc.polkachu.com/websocket"
 batch_delay = "500ms"
 
 [chains.trust_threshold]

docs/operators/babylon_validators/validator_setup.mdx

@@ -601,5 +601,5 @@ Before considering your validator fully operational:
 ### Important Links
 - **Official Documentation**: https://docs.babylonlabs.io/
 - **GitHub Repository**: https://github.com/babylonlabs-io/babylon
-- **Block Explorer**: https://babylon.explorers.guru/
+- **Block Explorer**: https://www.mintscan.io/babylon
 - **Mainnet Info**: https://github.com/babylonlabs-io/networks/tree/main/bbn-1

docs/operators/finality_providers/finality_provider_simple_guide.mdx

@@ -72,7 +72,7 @@ RPCListener = "127.0.0.1:12581"         # FPD service address
 [babylon]
 Key = "fp-key-1"                        # Key name from Step 4
 ChainID = "bbn-test-6"                  # Testnet chain ID
-RPCAddr = "https://babylon-testnet-rpc.nodes.guru"  # Public RPC node
+RPCAddr = "https://babylon-testnet-rpc.polkachu.com"  # Public RPC node
 KeyDirectory = "~/.fpd"                 # Key directory
 ```
 
@@ -113,7 +113,7 @@ fpd finality-provider-info <pubkey_hex from Step 2>
 ```
 #### View rewards:
 ```bash
-fpd reward-gauges <address from Step 4> --node https://babylon-testnet-rpc.nodes.guru
+fpd reward-gauges <address from Step 4> --node https://babylon-testnet-rpc.polkachu.com
 ```
 #### Monitoring metrics (optional):
   - Finality Provider metrics: http://localhost:2112/metrics
@@ -266,7 +266,7 @@ RPCListener = 0.0.0.0:12581
 [babylon]
 Key = fp-key-1
 ChainID = bbn-test-6
-RPCAddr = https://babylon-testnet-rpc.nodes.guru
+RPCAddr = https://babylon-testnet-rpc.polkachu.com
 KeyringBackend = test
 ```
 ### Step 7: Start Services
@@ -307,7 +307,7 @@ docker exec -it finality-provider \
 # View rewards
 docker exec -it finality-provider \
   fpd reward-gauges <address from Step 4> \
-  --node https://babylon-testnet-rpc.nodes.guru
+  --node https://babylon-testnet-rpc.polkachu.com
 ```
 
 ### Docker-Specific Common Issues
@@ -324,12 +324,12 @@ docker exec -it finality-provider \
     3. Verify the balance (replace `<your-address>` with your account address):
     ```bash
     # For local deployment:
-    fpd query bank balances <your-address> --node https://babylon-testnet-rpc.nodes.guru
+    fpd query bank balances <your-address> --node https://babylon-testnet-rpc.polkachu.com
 
     # For Docker deployment:
     docker exec -it finality-provider \
     fpd query bank balances <your-address> \
-    --node https://babylon-testnet-rpc.nodes.guru
+    --node https://babylon-testnet-rpc.polkachu.com
     ```
     4. Retry the registration command after confirming the balance is received.
 This error is resolved once the account has sufficient tbaby to cover transaction fees (typically a small amount, e.g., 1-10 tbaby).

docs/stakers/baby_stakers/baby_staking_cli.mdx

@@ -38,13 +38,13 @@ babylond tx epoching delegate [validator-addr] [amount] --from [wallet-name] --c
 - `[amount]`: The number of tokens you want to stake, in the unit of `ubbn`. For example, if you want to stake 1 $bbn$, you should enter `1000000ubbn`.
 - `[wallet-name]`: The name of the wallet used to sign the transaction.
 - `[chain-id]`: The chain ID of the Babylon network, such as `bbn-test-6`.
-- `[node-url]`: The URL of the connected node, such as `https://babylon-testnet-rpc.nodes.guru`.
+- `[node-url]`: The URL of the connected node, such as `https://babylon-testnet-rpc.polkachu.com`.
 - `[fee-amount]`: The transaction fee, for example, `100ubbn`.
 
 ### Example Command
-Suppose you want to stake 1 $bbn$ to the validator `bbnvaloper1fa0c7df8v25mv926wey4m9kunhhm7svnp6tezt`, using the wallet `test - staking`, with a chain ID of `bbn-test-6` and a node address of `https://babylon-testnet-rpc.nodes.guru` and a fee of `1000ubbn`. You can use the following command:
+Suppose you want to stake 1 $bbn$ to the validator `bbnvaloper1fa0c7df8v25mv926wey4m9kunhhm7svnp6tezt`, using the wallet `test - staking`, with a chain ID of `bbn-test-6` and a node address of `https://babylon-testnet-rpc.polkachu.com` and a fee of `1000ubbn`. You can use the following command:
 ```bash
-babylond tx epoching delegate bbnvaloper1fa0c7df8v25mv926wey4m9kunhhm7svnp6tezt 1000000ubbn --from test-staking --chain-id bbn-test-6 --node https://babylon-testnet-rpc.nodes.guru --gas auto --gas-adjustment 1.2 --fees 1000ubbn -y
+babylond tx epoching delegate bbnvaloper1fa0c7df8v25mv926wey4m9kunhhm7svnp6tezt 1000000ubbn --from test-staking --chain-id bbn-test-6 --node https://babylon-testnet-rpc.polkachu.com --gas auto --gas-adjustment 1.2 --fees 1000ubbn -y
 ```
 
 ## Step 3: Unbond Tokens
@@ -57,9 +57,9 @@ babylond tx epoching unbond [validator-addr] [amount] --from [wallet-name] --cha
 The parameters are the same as those in the staking command.
 
 ### Example Command
-Suppose you want to unbond 1 $bbn$ from the validator `bbnvaloper1fa0c7df8v25mv926wey4m9kunhhm7svnp6tezt`, using the wallet `test - staking`, with a chain ID of `bbn-test-6` and a node address of `https://babylon-testnet-rpc.nodes.guru` and a fee of `1000ubbn`. You can use the following command:
+Suppose you want to unbond 1 $bbn$ from the validator `bbnvaloper1fa0c7df8v25mv926wey4m9kunhhm7svnp6tezt`, using the wallet `test - staking`, with a chain ID of `bbn-test-6` and a node address of `https://babylon-testnet-rpc.polkachu.com` and a fee of `1000ubbn`. You can use the following command:
 ```bash
-babylond tx epoching unbond bbnvaloper1fa0c7df8v25mv926wey4m9kunhhm7svnp6tezt 1000000ubbn --from test-staking --chain-id bbn-test-6 --node https://babylon-testnet-rpc.nodes.guru --gas auto --gas-adjustment 1.2 --fees 1000ubbn -y
+babylond tx epoching unbond bbnvaloper1fa0c7df8v25mv926wey4m9kunhhm7svnp6tezt 1000000ubbn --from test-staking --chain-id bbn-test-6 --node https://babylon-testnet-rpc.polkachu.com --gas auto --gas-adjustment 1.2 --fees 1000ubbn -y
 ```
 
 ## Precautions

src/components/co-staking/CoStakingCalculator.jsx

@@ -8,15 +8,10 @@ const SATOSHIS_PER_BTC = 100000000; // 1 BTC = 100,000,000 satoshis
 const UBBN_PER_BABY = 1000000; // 1 BABY = 1,000,000 ubbn (micro BBN)
 
 // API endpoints
-const COSTAKING_REWARDS_API = 'https://babylon-archive.nodes.guru/babylon/costaking/v1/current_rewards';
-
-const getAPIBaseURL = () => {
-  if (typeof window !== 'undefined' && window.location.hostname === 'localhost') {
-    return 'https://babylon-archive.nodes.guru'; // Default testnet API
-  }
-  // Use the same domain for production, or configure via environment
-  return 'https://babylon-archive.nodes.guru';
-};
+const COSTAKING_API_BASE = 'https://babylon-archive-api.polkachu.com';
+const COSTAKING_REWARDS_API = `${COSTAKING_API_BASE}/babylon/costaking/v1/current_rewards`;
+
+const getAPIBaseURL = () => COSTAKING_API_BASE;
 
 export default function CoStakingCalculator() {
   const [btcAmount, setBtcAmount] = useState('');