diff --git a/.github/workflows/amiga.yml b/.github/workflows/amiga.yml
index 70f82d0..b84be1f 100644
--- a/.github/workflows/amiga.yml
+++ b/.github/workflows/amiga.yml
@@ -1,5 +1,10 @@
 name: amiga
 
+# Verifies that AmigaOS 3/4 and MorphOS still cross-compile. The uploaded
+# json-c.lha is a CI convenience artifact only — official json-c releases
+# remain source-only. Aminet uploads are a separate, manual process and
+# are not published from this job.
+
 on: [push, pull_request, workflow_dispatch]
 
 concurrency:
@@ -14,11 +19,19 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 120
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       # Ubuntu's `lha` package is lhasa: extract-only, cannot create archives.
       # Build LHa for UNIX (https://github.com/jca02266/lha) instead.
+      - name: Cache LHa for UNIX
+        id: cache-lha
+        uses: actions/cache@v6
+        with:
+          path: ~/.local/bin/lha
+          key: lha-16619b066b189ef289bb8b07b37d1c38d550da99-${{ runner.os }}
+
       - name: Install LHa for UNIX
+        if: steps.cache-lha.outputs.cache-hit != 'true'
         working-directory: ${{runner.temp}}
         run: |
           sudo apt-get update
@@ -31,7 +44,9 @@ jobs:
           ./configure --prefix="$HOME/.local"
           make -j"$(nproc)"
           make install
-          echo "$HOME/.local/bin" >> "$GITHUB_PATH"
+
+      - name: Add LHa to PATH
+        run: echo "$HOME/.local/bin" >> "$GITHUB_PATH"
 
       - name: Check lha can create archives
         run: |
@@ -49,9 +64,9 @@ jobs:
           wait
 
       - name: Build and package
-        run: ./package-amiga.sh
+        run: ./amiga/package-amiga.sh
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v7
         with:
           name: json-c.lha
           path: dist/json-c.lha
diff --git a/README.md b/README.md
index 6af6456..36bea72 100644
--- a/README.md
+++ b/README.md
@@ -275,7 +275,9 @@ make install
 Building for Commodore Amiga or MorphOS
 ----------------------
 
-Building for Commodore Amiga is supported for both Motorola 68k (AmigaOS 3) and PowerPC (AmigaOS 4) architectures. MorphOS on compatible PowerPC hardware is also supported. You can set up a cross compiler locally, however it is much easier to use the already preconfigured Amiga development environment wtthin a Docker container.
+Building for Commodore Amiga is supported for both Motorola 68k (AmigaOS 3) and PowerPC (AmigaOS 4) architectures. MorphOS on compatible PowerPC hardware is also supported. You can set up a cross compiler locally, however it is much easier to use the already preconfigured Amiga development environment within a Docker container.
+
+Included below are instructions for building for specific individual systems, as well as how to build for *all* Amiga variants.
 
 Install Docker on your machine if you don't already have it. You can download Docker Desktop for Windows/macOS/Linux [here](https://www.docker.com/products/docker-desktop/).
 
@@ -384,19 +386,19 @@ cmake -DMORPHOS_BASEREL32=ON ..
 
 ### Building and packaging every variant
 
-Two scripts at the repository root build the whole matrix across all three
+Two scripts in the `amiga/` directory build the whole matrix across all three
 systems, so you do not have to drive the container by hand.
 
-* `build-amiga-sdk.sh [OS ...]` — builds every variant and installs
+* `amiga/build-amiga-sdk.sh [OS ...]` — builds every variant and installs
   `libjson-c.a` plus the `json-c/` headers into an SDK tree. The location comes
   from `$AMIGA_SDK` (default `/opt/amiga`); either a `<target>/` or an
   AmigaSDK-gcc-style `amigaos3/sdk/<target>/` layout is accepted, and an OS
   whose subdirectory is absent is skipped rather than failing.
-* `package-amiga.sh [OS ...]` — builds the same matrix into a staging tree and
+* `amiga/package-amiga.sh [OS ...]` — builds the same matrix into a staging tree and
   produces `dist/json-c.lha` for distribution.
 
 Both default to `AmigaOS3 AmigaOS4 MorphOS`, and both take the variant list
-from the same table in `build-amiga-sdk.sh`, so they cannot disagree. 22
+from the same table in `amiga/build-amiga-sdk.sh`, so they cannot disagree. 22
 libraries are built in total: 15 for AmigaOS 3 (newlib, libnix and clib2, each
 across the five multilib slots), 3 for AmigaOS 4 (newlib, clib2, clib4) and 4
 for MorphOS (ixemul and native, each with and without `-mbaserel32`).
diff --git a/build-amiga-sdk.sh b/amiga/build-amiga-sdk.sh
similarity index 96%
rename from build-amiga-sdk.sh
rename to amiga/build-amiga-sdk.sh
index 835edda..9669ae3 100755
--- a/build-amiga-sdk.sh
+++ b/amiga/build-amiga-sdk.sh
@@ -2,14 +2,15 @@
 # Cross-build json-c for Amiga systems across every multilib slot and install
 # the archives plus headers into an SDK tree.
 #
-#   ./build-amiga-sdk.sh [OS ...]        # default: AmigaOS3 AmigaOS4 MorphOS
+#   ./amiga/build-amiga-sdk.sh [OS ...]   # default: AmigaOS3 AmigaOS4 MorphOS
 #
 # SDK location comes from $AMIGA_SDK (default /opt/amiga).
 set -uo pipefail
 
 SDK=${AMIGA_SDK:-/opt/amiga}
-cd "$(dirname "$0")"
-ROOT=$PWD
+AMIGA_DIR=$(cd "$(dirname "$0")" && pwd)
+ROOT=$(cd "$AMIGA_DIR/.." && pwd)
+cd "$ROOT"
 OSES=("$@"); [[ ${#OSES[@]} -eq 0 ]] && OSES=(AmigaOS3 AmigaOS4 MorphOS)
 
 # os | image tag | sdk subdir
diff --git a/json-c.readme b/amiga/json-c.readme
similarity index 98%
rename from json-c.readme
rename to amiga/json-c.readme
index 3bebf37..10a18b3 100644
--- a/json-c.readme
+++ b/amiga/json-c.readme
@@ -1,5 +1,5 @@
 Short: JSON parser and generator library (static libs + headers)
-Author: Michael Clark, Eric Haszlakiewicz et al.
+Author: Michael Clark, Eric Hawicz et al.
 Uploader: Cameron Armstrong (Nightfox) <cameronscottarmstrong@gmail.com>
 Type: dev/lib
 Version: 0.19
diff --git a/package-amiga.sh b/amiga/package-amiga.sh
similarity index 87%
rename from package-amiga.sh
rename to amiga/package-amiga.sh
index 2456c4c..62c2407 100755
--- a/package-amiga.sh
+++ b/amiga/package-amiga.sh
@@ -2,7 +2,7 @@
 # Build every json-c variant for the requested Amiga systems and package them
 # into dist/json-c.lha.
 #
-#   ./package-amiga.sh [OS ...]        # default: all three
+#   ./amiga/package-amiga.sh [OS ...]     # default: all three
 #
 # Archive layout (single directory at the root):
 #     json-c/json-c.readme
@@ -11,8 +11,9 @@
 #     json-c/MorphOS/...
 set -uo pipefail
 
-cd "$(dirname "$0")"
-ROOT=$PWD
+AMIGA_DIR=$(cd "$(dirname "$0")" && pwd)
+ROOT=$(cd "$AMIGA_DIR/.." && pwd)
+cd "$ROOT"
 DIST=$ROOT/dist
 STAGE=$DIST/stage
 OSES=("$@"); [[ ${#OSES[@]} -eq 0 ]] && OSES=(AmigaOS3 AmigaOS4 MorphOS)
@@ -32,7 +33,7 @@ rm -rf "$_lha_probe"
 # script's SDK layout ($SDK/<target>) is the same shape we want per OS, so each
 # OS gets staged under its own directory.
 rm -rf "$DIST"; mkdir -p "$STAGE/json-c"
-cp "$ROOT/json-c.readme" "$STAGE/json-c/json-c.readme"
+cp "$AMIGA_DIR/json-c.readme" "$STAGE/json-c/json-c.readme"
 
 built=()
 for os in "${OSES[@]}"; do
@@ -47,7 +48,7 @@ for os in "${OSES[@]}"; do
   echo "=== $os ==="
   # Stage whatever landed even if some variants failed -- a single unsupported
   # multilib should not drop the whole OS from the archive.
-  AMIGA_SDK="$tmp" ./build-amiga-sdk.sh "$os" || echo "  ($os: some variants failed, see above)"
+  AMIGA_SDK="$tmp" "$AMIGA_DIR/build-amiga-sdk.sh" "$os" || echo "  ($os: some variants failed, see above)"
   if [[ -n $(find "$tmp/$sub" -name 'libjson-c.a' -print -quit 2>/dev/null) ]]; then
     mkdir -p "$STAGE/json-c/$os"
     cp -a "$tmp/$sub/." "$STAGE/json-c/$os/"