Create mise.toml for WordPress toolchain (#56)

Add mise.toml for toolchain configuration in sinople-theme.

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SPDX-License-Identifier: CC-BY-SA-4.0
Copyright (c) Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
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## Summary

<!-- What does this PR do, and why? -->

Closes #

## Type of change

- [ ] 🐛 Bug fix (non-breaking change that fixes an issue)
- [ ] ✨ New feature (non-breaking change that adds functionality)
- [ ] 💥 Breaking change (would change existing behaviour)
- [ ] 🕳️ Soundness fix (fixes a checker/proof false-negative)
- [ ] 📖 Documentation
- [ ] 🧹 Refactor / tech debt (behaviour-preserving)
- [ ] ⚡ Performance
- [ ] 🔧 Build / CI / tooling

## How has this been verified?

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report?
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## Checklist

- [ ] My commits are **signed** (`git commit -S`).
- [ ] I ran the project's own checks/tests locally and they pass.
- [ ] New files carry the correct `SPDX-License-Identifier` (code/config
`MPL-2.0`,
      prose `CC-BY-SA-4.0`); I did not relicense existing files.
- [ ] Docs are updated, and no public claim now overstates what the code
does.
- [ ] I have not introduced a soundness hole (or I have flagged where I
might have).

## Notes for reviewers

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Signed-off-by: Jonathan D.A. Jewell <6759885+hyperpolymath@users.noreply.github.com>

Author: hyperpolymath

sinople-theme/mise.toml

@@ -0,0 +1,71 @@
+# mise.toml — toolchain for wordpress-tools / sinople-theme
+# Replaces .tool-versions (asdf). mise reads both, so delete the old file.
+
+# Require a recent mise so backend behaviour matches this file.
+min_version = "2025.1.0"
+
+[settings]
+# Needed for cargo:/npm:/ubi: backends on older mise releases; harmless on current ones.
+experimental = true
+
+[tools]
+# ── Runtimes ─────────────────────────────────────────────────
+bun  = "1.2"      # replaces deno
+node = "22"       # LTS — keep for toolchain compat; drop if nothing ends up needing it
+rust = "stable"   # WASM semantic processor
+php  = "8.4"      # theme target; 8.3 is the floor, CI also tests 8.5
+                  # NOTE: mise builds PHP from source — needs libxml2/openssl/sqlite
+                  # dev headers. If that's painful, use system PHP or ddev locally
+                  # and keep this pin for CI only.
+
+# ── Repo tooling ─────────────────────────────────────────────
+just       = "latest"   # repo has a Justfile
+trufflehog = "latest"   # standardised secret scanning (already in your CI)
+actionlint = "latest"   # GitHub Actions linting
+shellcheck = "latest"   # build.sh / dev.sh
+taplo      = "latest"   # TOML formatting, including this file
+
+# ── WASM toolchain ───────────────────────────────────────────
+# wasm-pack is unmaintained; wasm-bindgen-cli + wasm-opt is the current path.
+# Verify names against your mise version with: mise registry <name>
+"cargo:wasm-bindgen-cli" = "0.2"
+"cargo:cargo-audit"      = "latest"
+"cargo:cargo-deny"       = "latest"
+# wasm-opt: install binaryen via your OS package manager, or try:
+# "npm:binaryen" = "latest"   # confirm it exposes the wasm-opt bin on your platform
+
+# ── affinescript ─────────────────────────────────────────────
+# TODO: pick the one line matching how affinescript is actually distributed,
+# then delete the rest:
+# "npm:affinescript"              = "latest"   # if published to npm
+# "ubi:hyperpolymath/affinescript" = "latest"  # if GitHub release binaries
+# "aqua:hyperpolymath/affinescript" = "latest" # if added to the aqua registry
+# If it's built from this repo (e.g. cli/), leave it out of [tools] entirely
+# and let the setup task + [env] path below handle it.
+
+[env]
+WASM_TARGET = "wasm32-unknown-unknown"
+# Prepend in-repo tooling (e.g. a locally built affinescript) to PATH:
+_.path = ["./cli/bin"]
+
+[tasks.setup]
+description = "One-time: rust WASM target + JS deps"
+run = """
+rustup target add $WASM_TARGET 2>/dev/null || echo 'rustup not found — add the wasm32 target via your rust install'
+bun install
+"""
+
+[tasks.build]
+description = "Build everything"
+run = "./build.sh"
+
+[tasks.dev]
+description = "Watch mode"
+run = "./dev.sh"
+
+[tasks.test]
+description = "All suites (deno test → bun test migration)"
+run = """
+cargo test --manifest-path wasm/semantic_processor/Cargo.toml
+bun test
+"""