docs(cookbook): wire up filecoin-pin nav and replace external docs.filecoin.io links

- Add Filecoin Pin section and pages to SUMMARY.md and link it from
  the cookbook landing page.
- Replace https://docs.filecoin.io/* internal references with relative
  markdown paths across the glossary, protocol API, lotus components,
  and slashing-related pages, so the docs quality link-checker stops
  flagging them.

Author: nijoe1

SUMMARY.md

@@ -157,6 +157,12 @@
 * [Cookbook](build/cookbook/README.md)
   * [Store data](build/cookbook/store-data.md)
   * [Retrieve data](build/cookbook/retrieve-data.md)
+  * [Filecoin Pin](build/cookbook/filecoin-pin/README.md)
+    * [Filecoin Pin CLI](build/cookbook/filecoin-pin/filecoin-pin-cli.md)
+    * [Filecoin Pin GitHub Action](build/cookbook/filecoin-pin/github-action.md)
+    * [Filecoin Pin dApp Demo](build/cookbook/filecoin-pin/dapp-demo.md)
+    * [Filecoin Pin for ERC-8004 Agents](build/cookbook/filecoin-pin/erc-8004-agent-registration.md)
+    * [FAQ](build/cookbook/filecoin-pin/faq.md)
 
 ## Reference
 

build/cookbook/README.md

@@ -6,5 +6,6 @@ Practical recipes for building on Filecoin. Each recipe focuses on a specific ta
 
 * [Store data](store-data.md) — recipes for programmable storage of public or private data on Filecoin
 * [Retrieve data](retrieve-data.md) — recipes for fetching stored data from the network
+* [Filecoin Pin](filecoin-pin/README.md) — recipes for using Filecoin Pin to store and retrieve data on Filecoin Onchain Cloud
 
 [Was this page helpful?](https://airtable.com/apppq4inOe4gmSSlk/pagoZHC2i1iqgphgl/form?prefill_Page+URL=https://docs.filecoin.io/build/cookbook/overview)

getting-started/what-is-filecoin/crypto-economics.md

@@ -25,7 +25,7 @@ Additionally, 300 million FIL tokens are held in a mining reserve to incentivize
 
 ## Vesting
 
-Mining rewards are subject to a vesting schedule to support long-term network alignment. For instance, 75% of block rewards earned by miners vest linearly over 180 days, while 25% are immediately accessible, improving miner cash flow and profitability. Note that if the miner has incurred "[fee debt](https://docs.filecoin.io/storage-providers/filecoin-economics/slashing)," the immediately accessible block rewards will automatically go towards paying down those fees. 
+Mining rewards are subject to a vesting schedule to support long-term network alignment. For instance, 75% of block rewards earned by miners vest linearly over 180 days, while 25% are immediately accessible, improving miner cash flow and profitability. Note that if the miner has incurred "[fee debt](../../storage-providers/filecoin-economics/slashing.md)," the immediately accessible block rewards will automatically go towards paying down those fees.
 
 A certain portion of initially printed FIL tokens are vested to Protocol Labs teams and the Filecoin Foundation over six years, and to SAFT investors over three years, as outlined in the [vesting schedule](https://observablehq.com/@starboard/a-primer-to-filecoin-circulating-supply/2).
 

reference/built-in-actors/protocol-api.md

@@ -6,13 +6,13 @@ description: This page covers the Built-in actors Protocol API.
 
 The protocol level built-in actors API is split into the following sections:
 
-* [Account actor](https://docs.filecoin.io/reference/built-in-actors/protocol-api/#account-actor)
-* [Datacap](https://docs.filecoin.io/reference/built-in-actors/protocol-api/#datacap)
-* [Miner](https://docs.filecoin.io/reference/built-in-actors/protocol-api/#miner)
-* [Multisig](https://docs.filecoin.io/reference/built-in-actors/protocol-api/#multisig)
-* [Storage market actor](https://docs.filecoin.io/reference/built-in-actors/protocol-api/#storage-market-actor)
-* [Storage power actor](https://docs.filecoin.io/reference/built-in-actors/protocol-api/#storage-power-actor)
-* [Verified registry actor](https://docs.filecoin.io/reference/built-in-actors/protocol-api/#verified-registry-actor)
+* [Account actor](#account-actor)
+* [Datacap](#datacap)
+* [Miner](#miner)
+* [Multisig](#multisig)
+* [Storage market actor](#storage-market-actor)
+* [Storage power actor](#storage-power-actor)
+* [Verified registry actor](#verified-registry-actor)
 
 ## Account actor