manifest-schema: Rename ManifestDownloadInfo::checksum to hash to reduce

manifest size

Before:
```
wc -c manifests/* | grep total
2808686 total
```

After:
```
wc -c manifests/* | grep total
2748178 total
```

tools/codegen/src/main.rs

@@ -434,7 +434,7 @@ fn main() -> Result<()> {
             download_info.insert(platform, ManifestDownloadInfo {
                 url: Some(url),
                 etag,
-                checksum: hash,
+                hash,
                 bin: base_download_info.bin.as_ref().or(base_info.bin.as_ref()).map(|s| {
                     s.map(|s| {
                         replace_vars(

tools/manifest-schema/CHANGELOG.md

@@ -10,6 +10,10 @@ Note: In this file, do not use the hard wrap in the middle of a sentence for com
 
 ## [Unreleased]
 
+- Rename `ManifestDownloadInfo::checksum` field to `hash` to reduce manifest size.
+
+- Remove `BaseManifest` and related types since they are unrelated to public manifests.
+
 ## [0.1.1] - 2025-09-20
 
 - Add `HostPlatform::{powerpc64le_linux_gnu,powerpc64le_linux_musl,riscv64_linux_gnu,riscv64_linux_musl,s390x_linux_gnu,s390x_linux_musl}` ([#1133](https://github.com/taiki-e/install-action/pull/1133))

tools/manifest-schema/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "install-action-manifest-schema"
-version = "0.1.1"
+version = "0.2.0"
 edition = "2021"
 rust-version = "1.79" # Align to cargo-binstall: https://crates.io/crates/cargo-binstall
 license = "Apache-2.0 OR MIT"

tools/manifest-schema/src/lib.rs

@@ -224,7 +224,7 @@ pub struct ManifestDownloadInfo {
     #[serde(skip_serializing_if = "Option::is_none")]
     pub url: Option<String>,
     pub etag: String,
-    pub checksum: String,
+    pub hash: String,
     /// Path to binaries in archive. Default to `${tool}${exe}`.
     #[serde(skip_serializing_if = "Option::is_none")]
     pub bin: Option<StringOrArray>,