fix(packaging): bundle roles/ inside the wheel + add bundled: prefix (-> v1.1.2)

[Protocol-zero-0]

Why

Reference role scripts (planner.py, executor.sh, evaluator.py, goal_evaluator.py, strategist.py) lived at the repo top level, so pip install evolution-kernel users got the runtime but no working executor — the README's

```yaml
roles:
planner: ["python3", "roles/planner.py"]
```

only resolved for git-clone users whose CWD was the repo root. Worse, the v1.1.1 --permission-mode bypassPermissions fix lived in a file pip users didn't have.

What changes

• Move roles/* → evolution_kernel/roles/* so setuptools bundles them as package_data.
• Add evolution_kernel/_bundled.py with resolve_bundled(arg) using importlib.resources.
• Teach config._parse_roles to resolve a new bundled:<filename> prefix to the installed absolute path. bundled:executor.sh works whether the user pip install-ed or git clone-ed.
• Update 5 templates + examples/evolution.yml + both READMEs (EN + ZH) to use bundled: form. evolution-kernel init now writes a config that runs out of the box on pip-installed boxes.
• Add 6 tests covering happy-path resolution, no-op on plain argv, path-separator rejection, missing-file errors, and end-to-end through load_config.
• Bump pyproject.toml 1.1.1 → 1.1.2.

Backward compatibility

• bundled: is opt-in. Plain argv (["python3", "myplanner.py"]) passes through unchanged.
• Existing configs that hardcoded roles/X at the repo top level will need updating to bundled:X (or to the new path evolution_kernel/roles/X). The audience for this is very small in v1.1 — the README and evolution-kernel init templates are already updated, so a fresh checkout / fresh init "just works."

Verification

• python -m unittest discover -s tests — 108 tests pass (102 prior + 6 new)
• python -m build — wheel now contains evolution_kernel/roles/{evaluator.py,executor.sh,goal_evaluator.py,planner.py,strategist.py}
• Fresh venv pip install ...whl → resolve_bundled("bundled:executor.sh") returns a real site-packages path that exists
• CI green on this PR

What this unblocks

• Closes the v1.1.1 release-notes gap where the fix was advertised but pip users had no executor file to apply it to.
• Pre-requisite for v1.2.0 publicize narrative — pip install evolution-kernel + evolution-kernel init is now a self-contained 30-second flow.

[Copilot]

Pull request overview

This PR fixes packaging/runtime usability for pip install evolution-kernel by bundling the reference role scripts inside the Python wheel and introducing a bundled:<filename> config prefix that resolves to the installed on-disk role path via importlib.resources. This makes evolution-kernel init templates and example configs runnable without requiring a repo-root CWD or a git clone.

Changes:

• Added evolution_kernel/_bundled.py and updated config._parse_roles to resolve bundled:<filename> argv entries to installed evolution_kernel/roles/<filename> paths (with validation + clearer config errors).
• Moved/added bundled role scripts under evolution_kernel/roles/ and ensured they’re included in the wheel via pyproject.toml package-data.
• Updated templates/examples/READMEs to use bundled: and added unit tests covering resolution and error cases.

Reviewed changes

Copilot reviewed 15 out of 18 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tests/test_bundled_roles.py	Adds tests for bundled: resolution behavior and error surfacing through load_config.
README.md	Updates configuration examples/docs to use bundled: and describes bundled role locations.
README.zh.md	Same as README.md but for the Chinese documentation.
pyproject.toml	Bumps version to 1.1.2 and includes evolution_kernel/roles/* as package data.
examples/oss_fix_demo/bots/executor.py	Updates docs to reference the new bundled executor path.
examples/evolution.yml	Switches example roles to bundled: references.
evolution_kernel/templates/perf.yml	Switches template roles to bundled: references.
evolution_kernel/templates/lint.yml	Switches template roles to bundled: references.
evolution_kernel/templates/custom.yml	Switches template roles to bundled: references.
evolution_kernel/templates/coverage.yml	Switches template roles to bundled: references.
evolution_kernel/templates/benchmark.yml	Switches template roles to bundled: references.
evolution_kernel/roles/strategist.py	Updates internal comment/docs to match the new planner path reference.
evolution_kernel/roles/goal_evaluator.py	Updates internal comment/docs to match the new planner path reference.
evolution_kernel/roles/planner.py	Adds the bundled planner role implementation under the package.
evolution_kernel/roles/evaluator.py	Adds the bundled evaluator role implementation under the package.
evolution_kernel/roles/executor.sh	Adds the bundled executor shell role implementation under the package.
evolution_kernel/config.py	Resolves bundled: entries in roles.* during config parsing and wraps errors as ConfigError.
evolution_kernel/_bundled.py	Implements bundled: prefix resolution using importlib.resources.

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