[Bug] Shell snapshot doesn't capture zsh hook arrays (chpwd_functions, precmd_functions)

Bug Description
Title: Bash tool shell snapshot doesn't capture chpwd_functions / precmd_functions, breaking zoxide and similar tools

Environment:

• Claude Code on macOS (Darwin 25.3.0), zsh
• zoxide 0.9.8, initialized via eval "$(zoxide init zsh --cmd cd)" at the end of ~/.zshrc

Symptom:
Every cd invocation in the Bash tool prints:
zoxide: detected a possible configuration issue.
Please ensure that zoxide is initialized right at the end of your shell configuration file (usually ~/.zshrc).
The advice is a false positive — zoxide is at the end of .zshrc.

Root cause:
The Bash tool replays a shell snapshot at ~/.claude/shell-snapshots/snapshot-zsh-*.sh instead of sourcing .zshrc fresh. The snapshot captures function definitions (including __zoxide_hook, __zoxide_doctor, cd) but does not capture the chpwd_functions array. So __zoxide_hook is defined but never registered.

zoxide's __zoxide_doctor (called on every cd) checks chpwd_functions[(Ie)__zoxide_hook] -eq 0 and emits the warning when the hook isn't registered.

Side effect beyond the warning: Directory changes inside Bash-tool shells aren't recorded to the zoxide frecency database. Any tool that relies on chpwd_functions, precmd_functions, or preexec_functions (direnv, asdf, starship, etc.) is similarly affected.

Suggested fix:
In the snapshot generator, also serialize the chpwd_functions, precmd_functions, and preexec_functions arrays (and re-add-zsh-hook them on replay), not just function bodies.

Workaround for users: export _ZO_DOCTOR=0 in ~/.zshenv.

Environment Info

• Platform: darwin
• Terminal: tmux
• Version: 2.1.139
• Feedback ID: 2ba44988-7d62-4f59-a239-b51e4e6f1211

Errors

[{"error":"AxiosError: Request failed with status code 401\n    at hr (/$bunfs/root/src/entrypoints/cli.js:116:1194)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:121:12716)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:865:50)\n    at processTicksAndRejections (native:7:39)\n    at request (/$bunfs/root/src/entrypoints/cli.js:123:2467)\n    at async <anonymous> (/$bunfs/root/src/entrypoints/cli.js:9425:20616)\n    at async BN (/$bunfs/root/src/entrypoints/cli.js:420:5360)\n    at async rn3 (/$bunfs/root/src/entrypoints/cli.js:9425:20373)\n    at async hQK (/$bunfs/root/src/entrypoints/cli.js:9425:21133)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-14T08:16:04.076Z"},{"error":"Error: 401 {\"type\":\"error\",\"error\":{\"type\":\"authentication_error\",\"message\":\"Invalid authentication credentials\"},\"request_id\":\"req_011Cb28e5Gp9Zjj2vjH9mwgf\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:59523)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-14T08:18:22.382Z"},{"error":"Error: 401 {\"type\":\"error\",\"error\":{\"type\":\"authentication_error\",\"message\":\"Invalid authentication credentials\"},\"request_id\":\"req_011Cb28e4rm4fjEUxChUbcyB\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:59523)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-14T08:18:22.431Z"},{"error":"SyntaxError: JSON Parse error: Unexpected identifier \"Please\"\n    at <parse> (:0)\n    at parse (unknown)\n    at Mzq (/$bunfs/root/src/entrypoints/cli.js:175:10088)\n    at O (/$bunfs/root/src/entrypoints/cli.js:131:18457)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:177:1430)\n    at W4H (/$bunfs/root/src/entrypoints/cli.js:6541:601)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-14T08:18:22.432Z"},{"error":"AxiosError: Request failed with status code 401\n    at hr (/$bunfs/root/src/entrypoints/cli.js:116:1194)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:121:12716)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:865:50)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-14T08:18:44.550Z"},{"error":"Error: Failed to delete keychain entry: security: SecKeychainSearchCopyNext: The specified item could not be found in the keychain.\n    at PFq (/$bunfs/root/src/entrypoints/cli.js:245:289181)\n    at async M$9 (/$bunfs/root/src/entrypoints/cli.js:401:898)\n    at async RH8 (/$bunfs/root/src/entrypoints/cli.js:401:796)\n    at async GJ_ (/$bunfs/root/src/entrypoints/cli.js:2638:2388)\n    at async _LH (/$bunfs/root/src/entrypoints/cli.js:2664:6149)\n    at async <anonymous> (/$bunfs/root/src/entrypoints/cli.js:2689:3468)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-14T08:18:44.617Z"},{"error":"AxiosError: Request failed with status code 401\n    at hr…

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