revert(toolchain): restore go1.26 in CI

.gitea/workflows/release.yml

@@ -25,7 +25,7 @@ jobs:
 
       - uses: actions/setup-go@v6
         with:
-          go-version: "1.27rc1"
+          go-version: "1.26"
 
       - name: Download dependencies
         run: go mod download

.gitea/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
 
       - uses: actions/setup-go@v6
         with:
-          go-version: "1.27rc1"
+          go-version: "1.26"
 
       - name: Download dependencies
         run: go mod download
@@ -41,7 +41,7 @@ jobs:
 
       - uses: actions/setup-go@v6
         with:
-          go-version: "1.27rc1"
+          go-version: "1.26"
 
       - name: Download dependencies
         run: go mod download
@@ -84,7 +84,7 @@ jobs:
 
       - uses: actions/setup-go@v6
         with:
-          go-version: "1.27rc1"
+          go-version: "1.26"
 
       - name: Download dependencies
         run: go mod download

AGENTS.md

@@ -55,7 +55,7 @@ No body, no footers, no trailing period on the subject.
 
 ## Code Style
 
-Language: Go 1.27 (`toolchain go1.27rc1`).
+Language: Go 1.26 (`toolchain go1.26.5`).
 
 ### Formatter
 

CHANGELOG.md

@@ -111,9 +111,6 @@ tracks four hardware watchpoint slots, and the toolkit is Linux-only.
 
 - **Linux only.**  The toolkit, its CI and the released binaries are now
   Linux-only; cross-compiled to linux/{amd64,arm64,riscv64,loong64}.
-- **Go 1.27 toolchain.**  The build and CI toolchain moves to `go1.27rc1`
-  (the release-candidate line used to ship Go 1.27 features on release day),
-  so the emitted GOOBJ relocation types match the toolchain that links them.
 - **Phase 4 closed.**  README's "Remaining" list for the debugger is gone;
   disassembly at PC, memory-write, watchpoints, and source-line mapping are
   all shipped.

CONTRIBUTING.md

@@ -2,7 +2,7 @@
 
 ## Prerequisites
 
-- Go 1.27 or later (`toolchain go1.27rc1`)
+- Go 1.26 or later (`toolchain go1.26.5`)
 - `just` command runner
 - A Linux host on amd64, arm64, riscv64 or loong64
 

docs/development.md

@@ -4,7 +4,7 @@ Repository: [sourcedock.dev/petrbalvin/gasm-devkit](https://sourcedock.dev/petrb
 
 ## Prerequisites
 
-- **Go** 1.27+ with `toolchain go1.27rc1`
+- **Go** 1.26+ with `toolchain go1.26.5`
 - **just** — the command runner; every task below is a just recipe
 - No external dependencies beyond the Go toolchain
 

go.mod

@@ -2,6 +2,6 @@ module sourcedock.dev/petrbalvin/gasm-devkit
 
 go 1.26
 
-toolchain go1.27rc1
+toolchain go1.26.5
 
 require golang.org/x/arch v0.29.0