add implementation links for w3-filecoin

w3-filecoin.md

@@ -241,6 +241,11 @@ The issued receipt MUST have a `fx.fork` [effect] that links to the [`filecoin/s
 }
 ```
 
+##### Implementations
+
+- `@web3-storage/capabilities` [`filecoin/offer` capability validator](https://github.com/web3-storage/w3up/blob/adb24424d1faf50daf2339b77c22fdd44faa236a/packages/capabilities/src/filecoin/storefront.js#L20)
+- `@web3-storage/filecoin-api` [storefront `filecoin/offer` method](https://github.com/web3-storage/w3up/blob/e34eed1fa3d6ef24ce2c01982764f2012dbf30d8/packages/filecoin-api/src/storefront/service.js#L20)
+
 #### `filecoin/accept`
 
 This task is effectively a shortcut allowing an observer to find out the result of the [`filecoin/offer`] task chain without having to follow each step. The [Storefront] MUST issue a signed receipt with a [`DataAggregationProof`] result or an error.
@@ -298,6 +303,11 @@ This task is effectively a shortcut allowing an observer to find out the result
 }
 ```
 
+##### Implementations
+
+- `@web3-storage/capabilities` [`filecoin/accept` capability validator](https://github.com/web3-storage/w3up/blob/adb24424d1faf50daf2339b77c22fdd44faa236a/packages/capabilities/src/filecoin/storefront.js#L82)
+- `@web3-storage/filecoin-api` [storefront `filecoin/accept` method](https://github.com/web3-storage/w3up/blob/e34eed1fa3d6ef24ce2c01982764f2012dbf30d8/packages/filecoin-api/src/storefront/service.js#L123)
+
 #### `filecoin/submit`
 
 The task MUST be invoked by the [Storefront] which MAY be used to verify the offered content piece before propagating it through the pipeline.
@@ -365,6 +375,11 @@ If the added piece is invalid, the reason for the failure is also reported:
 }
 ```
 
+##### Implementations
+
+- `@web3-storage/capabilities` [`filecoin/submit` capability validator](https://github.com/web3-storage/w3up/blob/adb24424d1faf50daf2339b77c22fdd44faa236a/packages/capabilities/src/filecoin/storefront.js#L50)
+- `@web3-storage/filecoin-api` [storefront `filecoin/submit` method](https://github.com/web3-storage/w3up/blob/e34eed1fa3d6ef24ce2c01982764f2012dbf30d8/packages/filecoin-api/src/storefront/service.js#L82)
+
 #### `filecoin/info`
 
 An agent MAY invoke the `filecoin/info` capability to request known information about content piece in Filecoin. See [schema](#filecoininfo-schema).
@@ -455,6 +470,11 @@ An agent MAY invoke the `filecoin/info` capability to request known information
 }
 ```
 
+##### Implementations
+
+- `@web3-storage/capabilities` [`filecoin/info` capability validator](https://github.com/web3-storage/w3up/blob/adb24424d1faf50daf2339b77c22fdd44faa236a/packages/capabilities/src/filecoin/storefront.js#L114)
+- `@web3-storage/filecoin-api` [storefront `filecoin/info` method](https://github.com/web3-storage/w3up/blob/e34eed1fa3d6ef24ce2c01982764f2012dbf30d8/packages/filecoin-api/src/storefront/service.js#L239)
+
 ### _Aggregator_ Capabilities
 
 #### `piece/offer`
@@ -506,6 +526,11 @@ An [Aggregator] MUST issue a signed receipt to acknowledge the received request.
 
 See the [`piece/accept`] section for the subsequent task.
 
+##### Implementations
+
+- `@web3-storage/capabilities` [`piece/offer` capability validator](https://github.com/web3-storage/w3up/blob/e34eed1fa3d6ef24ce2c01982764f2012dbf30d8/packages/filecoin-client/src/aggregator.js#L22)
+- `@web3-storage/filecoin-api` [aggregator `piece/offer` method](https://github.com/web3-storage/w3up/blob/main/packages/filecoin-api/src/aggregator/service.js#L19)
+
 #### `piece/accept`
 
 An [Aggregator] MUST issue a receipt for the [`piece/accept`] task for the offered piece that was included in an aggregate. The receipt MUST contain an [`InclusionProof`] in the result and an `fx.join` [effect] linking to [`aggregate/offer`] task, or an error detailing the reason.
@@ -542,6 +567,11 @@ An [Aggregator] MUST issue a receipt for the [`piece/accept`] task for the offer
 }
 ```
 
+##### Implementations
+
+- `@web3-storage/capabilities` [`piece/accept` capability validator](https://github.com/web3-storage/w3up/blob/e34eed1fa3d6ef24ce2c01982764f2012dbf30d8/packages/filecoin-client/src/aggregator.js#L66)
+- `@web3-storage/filecoin-api` [aggregator `piece/accept` method](https://github.com/web3-storage/w3up/blob/e34eed1fa3d6ef24ce2c01982764f2012dbf30d8/packages/filecoin-api/src/aggregator/service.js#L62)
+
 ### _Dealer_ Capabilities
 
 #### `aggregate/offer`
@@ -611,7 +641,13 @@ The [Dealer] MUST issue a signed receipt to acknowledge the request. The issued
 
 See the [`aggregate/accept`](#aggregateaccept) section for the subsequent task.
 
-### `aggregate/accept`
+##### Implementations
+
+- `@web3-storage/capabilities` `aggregate/offer` [capability validator](https://github.com/web3-storage/w3up/blob/e34eed1fa3d6ef24ce2c01982764f2012dbf30d8/packages/capabilities/src/filecoin/dealer.js#L20)
+- `@web3-storage/filecoin-api` [`piece/accept` method creates `aggregate/offer` delegation](https://github.com/web3-storage/w3up/blob/e34eed1fa3d6ef24ce2c01982764f2012dbf30d8/packages/filecoin-api/src/aggregator/service.js#L91)
+- `@web3-storage/filecoin-api` [dealer service `aggregate/offer` method](https://github.com/web3-storage/w3up/blob/e34eed1fa3d6ef24ce2c01982764f2012dbf30d8/packages/filecoin-api/src/dealer/service.js#L14)
+
+#### `aggregate/accept`
 
 The [Dealer] MUST issue a receipt for the [`aggregate/accept`] task once it arranges deals with Storage Providers and they are live on the Filecoin chain. The receipt MUST either succeed with the [`DataAggregationProof`] or fail (with an `error` describing the problem with the `aggregate`).
 
@@ -670,6 +706,12 @@ If a deal fails due to an invalid piece, the issued receipt MUST contain `fx.for
 }
 ```
 
+##### Implementations
+
+- `@web3-storage/capabilities` [`aggregate/accept` capability validator](https://github.com/web3-storage/w3up/blob/e34eed1fa3d6ef24ce2c01982764f2012dbf30d8/packages/capabilities/src/filecoin/dealer.js#L48)
+- `@web3-storage/filecoin-api` [dealer `aggregate/offer` method ➡ `aggregate/accept` effect](https://github.com/web3-storage/w3up/blob/e34eed1fa3d6ef24ce2c01982764f2012dbf30d8/packages/filecoin-api/src/dealer/service.js#L69)
+- `@web3-storage/filecoin-api` [dealer `aggregate/accept` method](https://github.com/web3-storage/w3up/blob/e34eed1fa3d6ef24ce2c01982764f2012dbf30d8/packages/filecoin-api/src/dealer/service.js#L92)
+
 ### _Deal Tracker_ Capabilities
 
 #### `deal/info`
@@ -751,6 +793,11 @@ The invocation to the [Deal Tracker] MUST fail if the deal information for the a
 }
 ```
 
+##### Implementations
+
+- `@web3-storage/capabilities` `deal/info` [capability validator](https://github.com/web3-storage/w3up/blob/e34eed1fa3d6ef24ce2c01982764f2012dbf30d8/packages/capabilities/src/filecoin/deal-tracker.js#L17)
+- `@web3-storage/filecoin-api` [deal-tracker service `deal/info` method](https://github.com/web3-storage/w3up/blob/e34eed1fa3d6ef24ce2c01982764f2012dbf30d8/packages/filecoin-api/src/deal-tracker/service.js#L15)
+
 ## Schema
 
 ### Base types
@@ -784,7 +831,6 @@ type DealCapability union {
   discriminantKey "can"
 }
 
-
 type PieceRef struct {
   piece PieceLink
 }