feat: Generate smarter action input defaults

[daryllimyt]

We were simply doing the equivalent of '\n'.join("{key} : " for key in required_keys) which results in initial values all being null, which can fail validaiton leading to jarring UX. By generating smart defaults (zero value) based on the args schema, we avoid initially setting invalid values.

Summary

Replaces basic YAML field listing with intelligent default value generation for action inputs, improving UX by providing meaningful zero-values that respect field constraints.

Changes

• Added generate_zero_defaults() utility to generate type-aware defaults for Pydantic models
• Supports primitives, collections, constraints (min_length, gt, ge), nested models, enums, and datetime types
• Updated action router to use generated defaults instead of empty field list
• Added comprehensive unit tests covering 40+ scenarios

Test plan

• All existing tests pass
• New unit tests verify correct default generation for various field types and constraints

[chatgpt-codex-connector]

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[cubic-dev-ai]

1 issue found across 3 files

Prompt for AI agents (all 1 issues)

Understand the root cause of the following 1 issues and fix them.


<file name="tracecat/workflow/actions/utils.py">

<violation number="1" location="tracecat/workflow/actions/utils.py:35">
The numeric zero generator ignores lt/le constraints, so fields declared with Field(lt=...) or Field(le=...) receive 0 and immediately fail validation. Please incorporate upper-bound handling to keep generated defaults within the allowed range.</violation>
</file>

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[daryllimyt]

@cubic-dev-ai rereview

[daryllimyt]

@codex rereview

[cubic-dev-ai]

@cubic-dev-ai rereview

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[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Delightful!

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[cubic-dev-ai]

1 issue found across 3 files

Prompt for AI agents (all 1 issues)

Understand the root cause of the following 1 issues and fix them.


<file name="tracecat/workflow/actions/utils.py">

<violation number="1" location="tracecat/workflow/actions/utils.py:469">
The bytes default ignores min_length, so required bytes fields still fail validation when a minimum length is set. Please generate a placeholder of the required length instead of returning an empty string.</violation>
</file>

_{React with 👍 or 👎 to teach cubic. Mention @cubic-dev-ai to give feedback, ask questions, or re-run the review.}