Context compaction loses inline scripts executed via Bash heredocs

Description

During context compaction/summarization, inline Python scripts executed via Bash heredocs (python3 << 'EOF') are lost. The summary references the script's existence and purpose but doesn't preserve the actual code.

Steps to Reproduce

1. In a long session, create and execute a substantial Python script via Bash heredoc:

``bash
python3 << 'EOF'
import pandas as pd
# ... 150+ lines of parsing logic ...
df.to_csv('output.tsv')
EOF
``

1. Continue the session until context compaction occurs

1. After compaction, the summary mentions "Built improved parser using capital-letter city detection" but the actual code is gone

Expected Behavior

The compaction summary should either:

• Preserve substantial code blocks (especially those that took significant iteration to develop)
• Write them to a file before compaction
• Include them in the summary in a recoverable format

Actual Behavior

• Summary says things like "Generated tyler_customers_v2.tsv with new format" but the script that generated it is lost
• Had to manually recover the code by parsing the raw JSONL transcript file at ~/.claude/projects/.../[session-id].jsonl

Impact

• Significant work lost (150+ line parser with multiple iterations/refinements)
• User had to interrupt the session to recover code
• Recovery required parsing internal JSONL format which users shouldn't need to do

Workaround

The code was recoverable from the JSONL transcript by searching for tool_use blocks containing the function definitions:

import json
with open('session.jsonl', 'r') as f:
    for line in f:
        obj = json.loads(line)
        # Search for Bash tool calls containing the script

Suggestion

For Bash tool calls containing heredocs with substantial code (e.g., > 20 lines), consider:

1. Auto-saving to a file in the working directory before compaction
2. Including the full code in the compaction summary
3. Flagging these as "preserve" during summarization

Environment

• Claude Code CLI
• Model: claude-opus-4-5-20250101
• Session involved iterative development of a customer data parser