Fix setup.bat PY_MINOR detection and run-all.bat START command quoting

[Copilot]

Two Windows batch script bugs caused setup.bat to crash during the optional llama-cpp-python install and run-all.bat to fail launching services with 'Frontend:' is not recognized.

setup.bat — PY_MINOR detection

The for /f "tokens=2" form with platform.python_version_tuple()[1] had two defects: the ) in the expression terminated the for /f clause early (batch parser truncation), and tokens=2 always yielded empty since the output is a single token. Replaced with usebackq backtick form using sys.version_info[1]:

- for /f "tokens=2" %%i in ('"%PYTHON%" -c "import platform; print(platform.python_version_tuple()[1])"') do set PY_MINOR=%%i
+ for /f "usebackq delims=" %%i in (`"%PYTHON%" -c "import sys; print(sys.version_info[1])"`) do set "PY_MINOR=%%i"

run-all.bat — START command quoting

cmd /k ^ line continuation with unescaped inner path quotes caused CMD to treat path components like Frontend: as commands. Collapsed to a single line with ""path"" doubled-quote escaping:

- start "NPU-STACK Backend" cmd /k ^
- "call "!ROOT!\.venv\Scripts\activate.bat" & cd /d "!ROOT!\backend" & python main.py"
+ start "NPU-STACK Backend" cmd /k "call ""!ROOT!\.venv\Scripts\activate.bat"" & cd /d ""!ROOT!\backend"" & python main.py"

Same fix applied to setup.bat's generator section so freshly-created run-all.bat files are also correct.

Original prompt

User is asking for confirmation whether file modifications are being made directly in chainchopper/NPU-STACK and expects direct repository edits for reported setup/run script issues. Please proceed by creating/continuing a PR with concrete file changes in the repository so the user can git pull fixes.

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[Copilot]

Pull request overview

Fixes Windows batch-script quoting/parsing issues that were breaking optional llama-cpp-python install in setup.bat and service launching in run-all.bat.

Changes:

• Update setup.bat to detect Python minor version via sys.version_info[1] using for /f usebackq to avoid batch parser truncation.
• Fix START cmd /k quoting in run-all.bat so paths with spaces don’t get mis-parsed as commands.
• Apply the same START quoting fix to the run-all.bat generator section inside setup.bat.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
setup.bat	Fixes PY_MINOR detection and corrects quoting when generating run-all.bat entries.
run-all.bat	Fixes start ... cmd /k command-line quoting so backend/frontend windows launch reliably.

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[Copilot]

PY_MINOR is derived via a for /f command substitution, but it's never cleared or validated. If the Python invocation fails (e.g., transient venv/python issue), PY_MINOR could retain a pre-existing environment value and select the wrong wheel branch. Consider set "PY_MINOR=" before the loop and adding a guard that falls back to the generic pip install llama-cpp-python --only-binary :all: path when PY_MINOR is not set.

Suggested change

	set "LLAMA_CPP_OK=1"
	set "LLAMA_CPP_OK=1"
	set "PY_MINOR="