fix(ipip-0499): correct kubo legacy profile

- rename kubo-legacy-2015 to kubo-legacy-2025
- clarify (v0.39 default) instead of (kubo default)
- fix leaves value: dag-pb (UnixFSRawLeaves=False in legacy-cid-v0)

Author: lidel

src/ipips/ipip-0499.md

@@ -84,7 +84,7 @@ The initial profile in the series, **`unixfs-2025`**, captures the baseline defa
 
 We also define a series of **legacy profiles**, used by various implementations as of November 2025:
 
-|                               | `kubo-legacy-2015` (kubo default) | `helia-2025` | `storacha-2025`    | `kubo-2025`        | `kubo-wide-2025`        | `dasl-2025`   |
+|                               | `kubo-legacy-2025` (v0.39)     | `helia-2025`    | `storacha-2025`    | `kubo-2025`        | `kubo-wide-2025`        | `dasl-2025`   |
 | ----------------------------- | ------------------------------ | --------------- | ------------------ | ------------------ | ----------------------- | ------------- |
 | CID version                   | CIDv0                          | CIDv1           | CIDv1              | CIDv1              | CIDv1                   | CIDv1         |
 | Hash function                 | sha2-256                       | sha2-256        | sha2-256           | sha2-256           | sha2-256                | sha2-256      |
@@ -94,7 +94,7 @@ We also define a series of **legacy profiles**, used by various implementations
 | DAG width (children per node) | 174                            | 1024            | 1024               | 174                | **1024**                | not specified |
 | `HAMTDirectory` fanout        | 256 blocks                     | 256 blocks      | 256 blocks         | 256 blocks         | **1024**                | not specified |
 | `HAMTDirectory` threshold     | 256KiB (est:links[name+cid])   | 256KiB (est)    | 1000 **links**     | 256KiB             | **1MiB**                | not specified |
-| Leaves                        | raw                            | raw             | raw                | raw                | raw                     | not specified |
+| Leaves                        | dag-pb                         | raw             | raw                | raw                | raw                     | not specified |
 | Empty directories             | Included                       | Included        | Ignored            | Included           | Included                | not specified |
 | Hidden entities               | Included                       | Ignored         | Ignored            | Included           | Included                | not specified |