Docs: a security policy, and packaging metadata that matches the backends

SECURITY.md

@@ -0,0 +1,48 @@
+# Security Policy
+
+## Supported versions
+
+| Version | Supported |
+|---|---|
+| 0.3.x | ✅ |
+| ≤ 0.2.x | ❌ |
+
+Fixes land on `main` and go out in the next release. This is a single-maintainer project, so there is no backport branch — upgrading to the current release is the upgrade path.
+
+## Reporting a vulnerability
+
+Use GitHub's private vulnerability reporting: **Security → Report a vulnerability** on [the repository](https://github.com/bmxcode/samplerdisc/security). Please don't open a public issue for something exploitable.
+
+Expect an acknowledgement within about a week. That is a realistic figure for a hobby project with one maintainer and no on-call, not a service level agreement.
+
+Include the exact command you ran, the container and filesystem involved, the output of `samplerdisc --version`, and what happened. **Never attach a disc image or extracted audio** — the same rule as ordinary bug reports ([ADR-0008](docs/adr/0008-no-media-in-the-repo.md)). A minimal crafted image that reproduces the problem is more useful than a commercial library anyway, and it is the one kind of image that may be attached.
+
+## What the threat model actually is
+
+`samplerdisc` has exactly one untrusted input: a disc image, usually downloaded from archive.org or a stranger's FTP and named by whoever uploaded it. Every offset, length, partition count and sample name inside that image is attacker-controlled, and the parsers are the security surface of this project.
+
+What the tool does with it is narrow, and worth stating because it bounds what a bad image can reach:
+
+- **No network.** Nothing in `src/` imports `socket`, `urllib`, `http` or anything like them. The tool never opens a connection.
+- **No subprocess, no `eval`, no `pickle`, no shell.** Nothing is deserialised and nothing is executed.
+- **No dependencies.** The whole tool is the CPython standard library ([ADR-0001](docs/adr/0001-pure-python-stdlib-only.md)), so there is no third-party supply chain to compromise.
+- **Input images are opened read-only.** The tool writes to the output directory you name, and nowhere else.
+
+### In scope — please report these privately
+
+- **Writing outside the output directory.** Volume and sample names come off the disc and become filenames, so they pass through an allowlist first: `safe_name()` in [src/samplerdisc/extract.py](src/samplerdisc/extract.py) replaces everything outside `[A-Za-z0-9 ._+#-]`, which means `/`, `\` and `:` cannot survive it, and a dot-only name becomes `unnamed`. A name that escapes the output directory regardless is a vulnerability.
+- **Code or command execution** triggered by image content.
+- **Reading files other than the image you pointed it at.**
+- **Resource exhaustion out of proportion to the input** — a small image that drives unbounded memory or unbounded output. Compressed `.mdx` is inflated in bounded blocks rather than in one call, so a compression bomb should not be possible; a case where it is, counts.
+
+### Out of scope — open a normal issue instead
+
+- **A crash or traceback on a damaged image.** This is a real bug and worth reporting — the project rule is that damaged input degrades and never crashes — but it is not a security boundary. The tool runs with your own privileges, on a file you chose to hand it.
+- **A disc that won't read, wrong audio, or a wrong sample rate.** Those are format problems; the issue templates cover them.
+- **Memory or disk use proportional to a genuinely large disc.**
+
+Use the [issue templates](https://github.com/bmxcode/samplerdisc/issues/new/choose) for anything in this second list. `samplerdisc info` output is the useful thing to paste.
+
+## What happens next
+
+A confirmed report gets a fix on a branch, a pull request with the analysis in its body, and a release. A GitHub security advisory goes out with it, crediting you by name unless you would rather it didn't.

pyproject.toml

@@ -1,12 +1,12 @@
 [project]
 name = "samplerdisc"
 version = "0.3.0"
-description = "Convert vintage sampler CD-ROM images (AKAI and friends) to uncompressed WAV"
+description = "Convert vintage sampler CD-ROM images (AKAI, E-mu, Roland) to uncompressed WAV"
 readme = "README.md"
 license = "MIT"
 requires-python = ">=3.11"
 authors = [{ name = "Peter Tos" }]
-keywords = ["akai", "sampler", "s1000", "s3000", "cdrom", "wav", "mdx", "nrg", "preservation"]
+keywords = ["akai", "sampler", "s1000", "s3000", "emu", "roland", "s770", "cdrom", "iso9660", "wav", "aiff", "mdx", "nrg", "preservation"]
 classifiers = [
   "Development Status :: 3 - Alpha",
   "Intended Audience :: End Users/Desktop",