bin/pyda: quote app-args passthrough so target args survive

[s8lvg]

Problem

bin/pyda passes the target program's arguments through an unquoted ${@:2}.
Bash field-splits an unquoted expansion on $IFS and globs it, so any target
argument containing spaces, tabs, newlines, or glob characters is mangled
before it reaches the target.

Reproduce

A no-op tool (noop.py):

from pyda import *
p = process()
p.run()

Run a target with a single argument that contains spaces:

pyda noop.py -- /usr/bin/printf '[%s]\n' 'a b c'

Expected (one argument):

[a b c]

Actual (argument split into three):

[a]
[b]
[c]

Same cause also globs: pyda noop.py -- /bin/echo '*' prints the directory
listing instead of a literal *.

Fix

Quote the expansion: "${@:2}" expands each positional parameter as its own
word, verbatim, with no splitting or globbing. Also quote "$PYDA_TOOL_PATH"
for paths with spaces.