feat(cli): add query dry-run mode

[Arvind-puthucode]

Description

Adds a --dry-run option to helix query so users can inspect the generated dynamic query request JSON without sending it to a Helix instance.

This works with all existing query inputs (--file, --json, -e/--ts, and --ts-file) and respects --compact for single-line output. Dry-run mode validates the request shape, prints the request body, and exits before loading project config or making an HTTP request.

Related Issues

N/A

Checklist when merging to main

• No compiler warnings (if applicable)
• Code is formatted with rustfmt
• No useless or dead code (if applicable)
• Code is easy to understand
• Doc comments are used for all functions, enums, structs, and fields (where appropriate)
• All tests pass
• Performance has not regressed (assuming change was not to fix a bug)
• Version number has been updated in helix-cli/Cargo.toml and helixdb/Cargo.toml (N/A - CLI behavior only)

Additional Notes

Verification run locally:

• cargo fmt --all
• cargo test -p helix-cli
• HELIX_NO_UPDATE_CHECK=1 cargo run -p helix-cli --quiet -- query dev --json '{"request_type":"read","query":{"queries":[]}}' --dry-run --compact

Greptile Summary

This PR adds a --dry-run flag to helix query that validates the constructed request body and prints it (respecting --compact) without loading project configuration or making an HTTP request.

• query.rs: dry_run: bool is added to run(); the early-return branch fires after validate_dynamic_request but before ProjectContext::find_and_load, plus a format_query_request helper and two unit tests.
• main.rs: Adds the dry_run field to the Query enum variant, wires it into the call site, and adds a parser-level test.
• chef.rs / README.md: Mechanical signature update and doc update respectively.

Important Files Changed

Filename	Overview
helix-cli/src/commands/query.rs	Adds dry_run parameter; early exit after validation but before project load; new format_query_request helper; two well-scoped unit tests.
helix-cli/src/main.rs	Adds dry_run field to Query enum, example in after_help, passes flag through to query::run, adds parser-level test.
helix-cli/src/commands/chef.rs	Mechanical update: adds false for the new dry_run parameter to the existing query::run call inside seed_starter_data.
helix-cli/README.md	Single-line doc update noting --dry-run on the query command; accurate and consistent with the implementation.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[helix query ...args] --> B[parse_query_request\nfile / json / ts / ts_file]
    B --> C{parse OK?}
    C -- error --> Z1[return Err]
    C -- ok --> D[validate_dynamic_request\nrequest_type + warm check]
    D --> E{valid?}
    E -- error --> Z2[return Err]
    E -- ok --> F{--dry-run?}
    F -- yes --> G{verbosity\nshow_normal?}
    G -- yes --> H[format_query_request\npretty or compact]
    H --> I[println! request body]
    I --> J[return Ok]
    G -- no --> J
    F -- no --> K[ProjectContext::find_and_load\n+ dotenvy .env]
    K --> L[build reqwest request\nLocal or Enterprise]
    L --> M[POST /v1/query]
    M --> N[print response]
    N --> J

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_{Reviews (1): Last reviewed commit: "feat(cli): add query dry-run mode" | Re-trigger Greptile}

[xav-db]

I like this!

[Arvind-puthucode]

Hey @xav-db nice to know
i see one more reviewer to approve is required!

[xav-db]

can you fix conflicts

[Arvind-puthucode]

can you fix conflicts

@xav-db done