Add auto-open support to program selection

[mad-sol-dev]

Summary

• add GHIDRA_BRIDGE_PROGRAM_AUTOOPEN gating to select_program, locking selections per switch policy and propagating cautious warnings
• expose the Ghidra client open_program endpoint to auto-open validated project files
• refresh program selection tests to cover locking behavior and auto-open flows

Testing

• pytest bridge/tests/unit/test_program_selection_tools.py
• pytest bridge/tests/contract/test_program_selection.py

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Codex Task

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Auto-open call blocked by whitelist

The new auto-open flow invokes EndpointRequester(..., key="OPEN_PROGRAM", ...), but DEFAULT_WHITELIST does not contain an OPEN_PROGRAM entry, so _request_lines rejects the request as non-whitelisted. When GHIDRA_BRIDGE_PROGRAM_AUTOOPEN is enabled every auto-open call will therefore return None, and _maybe_autoopen_program will always emit the failure warning instead of actually opening the program.

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