[spark-compete] fix: handle backslash-escaped quotes in env file values

[ifeoluwaaj]

spark-compete Packet

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---
*[Body trimmed]*

## Bug Summary

Bug in 

**Severity:** MEDIUM

**Expected:** Code should handle 

## Root Cause

The bug exists in `src/spark_cli/cli.py` around line 50.

**Original code:**

Team: Sequence

Role	Username	GitHub	Device
LLM Device Holder	@ifesn	ifeoluwaaj	VPS
Member	@micc9ee	micc9ee	-
Member	@londitshabalala	londitshabalala	-

## Fix

Fix applied: fix: handle backslash-escaped quotes in env file values. See PR diff for code changes.

## Before (The Bug)

```python

After (The Fix)

See PR diff for fixed code.

Testing

• Verified fix compiles without syntax errors
• Verified existing test suite passes
• Manual verification: fix: handle backslash-escaped quotes in env file values

Files Changed

• src/spark_cli/cli.py (line 50)
• src/spark_cli/cli.py (line 65)
• src/spark_cli/cli.py (line 84)
• src/spark_cli/cli.py (line 343)
• src/spark_cli/cli.py (line 449)

Risk Notes

• Surface changed: src/spark_cli/cli.py
• Risk level: Low - minimal code changes
• Reviewers should verify: Fix handles edge cases correctly

Duplicate Notes

• Checked all open PRs in spark-cli - no existing fixes found
• This is a unique fix addressing: fix: handle backslash-escaped quotes in env file values