feat(recipes): extend the developer recipes to the new Linux guests

[NovusEdge]

Closes #85. Depends on #97, which merged: a guest with recipes produces more
than one cloud-config document, and AlmaLinux and Rocky could not read the
archive stoat used to emit.

devtools and python-dev now declare almalinux, rocky and opensuse.

The two dnf guests reuse the Fedora script. It is renamed install-rpm.sh to
say what it covers, matching what python-dev already called its own.
openSUSE gets one new script per recipe, because zypper names its interpreter
package differently.

Package names, checked on the guests

I booted AlmaLinux 9.8 and Leap 16.0 and asked their package managers rather
than assuming.

dnf list vim reports no match on AlmaLinux, which suggested the RPM list
needed changing. dnf install vim resolves anyway: vim-enhanced provides the
name, and the transaction installs four packages. So the existing list works
unchanged on all three dnf guests, and the script says so in a comment.

Leap 16 names the interpreter for its version. python313 and python313-pip
install python3-base, and in the guest:

python3: /usr/bin/python3
pip3: /usr/bin/pip3
pip: /usr/bin/pip
Python 3.13.14
pip 25.0.1 from /usr/lib/python3.13/site-packages/pip (python 3.13)
venv ok

Both binaries the recipe looks for exist, and python3 -m venv works, so the
shared venv logic needs no change.

Tests

TestBundledCommonDeveloperRecipeContracts now expects all eight guests and
checks that every declared script resolves.
TestBundledPythonDevFallsBackWhenEscalationRefuses covers the three new
mappings, so the escalation probe from #92 is exercised on them too.

Live evidence

Filled in when the matrix finishes.

Not in this change

The five python-dev installers differ by one package line and share about a
hundred lines of venv and escalation logic. Collapsing them into one script
that switches on the guest is worth doing, and it is a bigger change than this
one.

[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between 60460a8 and 27d214d.

📒 Files selected for processing (7)

• docs/recipes/overview.md
• internal/recipes/bundled/devtools/install-rpm.sh
• internal/recipes/bundled/devtools/install-zypper.sh
• internal/recipes/bundled/devtools/recipe.toml
• internal/recipes/bundled/python-dev/install-zypper.sh
• internal/recipes/bundled/python-dev/recipe.toml
• internal/recipes/samples_test.go

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[NovusEdge]

Live evidence

Candidate 27d214d, retained under common-recipes/live/n3, one attempt per row.

Guest	start	verify	stop
AlmaLinux 9	passed	passed	passed
Rocky 9	passed	passed	passed
openSUSE Leap 16.0	passed	passed	passed

Each row creates the VM with --recipes devtools,python-dev, boots it, waits for SSH, then waits for both recipes to report healthy. Verify checks that the declared outputs resolve to real executables in the guest, runs the recipe fixture scripts, confirms a second apply plans both recipes as skip, and checks a sentinel written into the virtual environment survives the reapply and the health probe.

This is the first time these three guests have taken a cloud recipe at all. Before #97 the seed was a cloud-config-archive, and their cloud-init failed its init-local stage on it.

common_gate.py learned where the three images live; it previously knew only the original five.