fix(cli): validate skill listing prices

[sevencat2004]

Fixes #457

Summary

• validate sh1pt skills new --price before writing manifests
• reject negative, fractional, and non-numeric values by falling back to 0
• reuse the sanitized price for generated marketplace publish commands
• add CLI tests for negative and fractional prices

Validation

• corepack pnpm test -- packages/cli/src/commands/skills.test.ts
• node_modules.bin\tsc.CMD -p packages/cli/tsconfig.json --noEmit

[greptile-apps]

Greptile Summary

This PR adds a parsePrice helper to the skills new CLI command, replacing the old parseInt(opts.price, 10) || 0 expression (which silently accepted negative values, since -5 || 0 evaluates to -5). The new validator rejects any non-digit-only string via /^\d+$/ and additionally guards against unsafe integer overflow via Number.isSafeInteger.

• Core fix (skills.ts): parsePrice is called once and its result is reused in both the top-level price field and the marketplace command strings, eliminating the previous duplication where each site re-ran parseInt independently.
• Tests (skills.test.ts): Three new integration tests in skills new command exercise the rejection of negative prices (-5→0), acceptance of a valid integer (100→100), and rejection of fractional prices (1.9→0), asserting on both the serialized manifest and the generated ugig command string.

Confidence Score: 5/5

The price-validation logic is correct and the tests cover the key edge cases; no new defects are introduced by this change.

The parsePrice implementation is sound: the /^\d+$/ regex correctly excludes the sign character, ruling out negatives, and also excludes the decimal point, ruling out fractions. Number.isSafeInteger handles the pathological large-integer case. The marketplace command generation now consistently uses the sanitized value. The new tests confirm the advertised behaviour end-to-end by reading the written manifest rather than mocking internals.

No files require special attention for the price-validation change itself. Previously flagged Unicode regressions in skills.ts remain unresolved in this revision.

Important Files Changed

Filename	Overview
packages/cli/src/commands/skills.ts	Adds parsePrice helper that gates on /^\d+$/ and Number.isSafeInteger; replaces old `parseInt
packages/cli/src/commands/skills.test.ts	Adds a skills new command describe block with tests for negative (-5 to 0), valid positive (100 to 100), and fractional (1.9 to 0) prices. Tests verify both manifest.price and the generated ugig command string.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A["parsePrice(value: string)"] --> B{"/^\\d+$/.test(value)?"}
    B -- No --> C["return 0\n(rejects: negatives, decimals,\n non-numeric strings)"]
    B -- Yes --> D["Number.parseInt(value, 10)"]
    D --> E{"Number.isSafeInteger(parsed)?"}
    E -- No --> F["return 0\n(rejects: very large integers)"]
    E -- Yes --> G["return parsed"]
    G --> H["price used in manifest\n& marketplace commands"]

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_{Reviews (3): Last reviewed commit: "fix(cli): validate skill listing prices" | Re-trigger Greptile}

[sevencat2004]

Submitted this PR for the ugig bounty/gig: "Need someone to test submit bugs and PRs to fix those bugs".

The PR is ready for review:

• fixes skills new accepts invalid listing prices #457
• automated checks are passing
• Greptile marked it safe to merge with confidence 5/5

Solana wallet for bounty payout:
Dy4yMkjCfupxaURt6iTMUrxqSDEmAJPPkKF66QahxJZD