feat(seed): add short aliases for optional CLI params

[fern-support]

Summary

• Adds short aliases to all seed CLI optional params that were missing them
• Single-word params get single-letter aliases (e.g. --fixture → -f, --local → -l)
• Compound hyphenated params use initials matching word count (e.g. --skip-scripts → -ss, --base-ref → -br, --fern-repo-directory → -frd)

Test plan

• pnpm compile --filter @fern-api/seed-cli passes
• Verify pnpm seed test --help shows aliases
• Spot-check a few aliases work (e.g. pnpm seed test -g python-sdk -f basic-auth -ss)

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[claude]

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[github-actions]

🌱 Seed Test Selector

Select languages to run seed tests for:

• Python
• TypeScript
• Java
• Go
• Ruby
• C#
• PHP
• Swift
• Rust
• OpenAPI

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How to use: Click the ⋯ menu above → "Edit" → check the boxes you want → click "Update comment". Tests will run automatically and snapshots will be committed to this PR.

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 2 additional findings.

[github-actions]

SDK Generation Benchmark Results

Comparing PR branch against latest nightly baseline on main (2026-04-09T04:46:50Z).

Full benchmark table (click to expand)

Generator	Spec	main (generator)	main (E2E)	PR (generator)	Delta
csharp-sdk	square	95s	138s	96s	+1s (+1.1%)
go-sdk	square	107s	134s	106s	-1s (-0.9%)
java-sdk	square	290s	346s	291s	+1s (+0.3%)
php-sdk	square	85s	119s	83s	-2s (-2.4%)
python-sdk	square	130s	166s	128s	-2s (-1.5%)
ruby-sdk-v2	square	115s	153s	120s	+5s (+4.3%)
rust-sdk	square	93s	95s	93s	+0s (+0.0%)
swift-sdk	square	104s	448s	106s	+2s (+1.9%)
ts-sdk	square	98s	134s	98s	+0s (+0.0%)

main (generator): generator-only time via --skip-scripts (includes Docker image build, container startup, IR parsing, and code generation — this is the same Docker-based flow customers use via fern generate). main (E2E): full customer-observable time including build/test scripts (nightly baseline, informational). Delta is computed against generator-only baseline.
⚠️ = generation exited with a non-zero exit code (timing may not reflect a successful run).
Baseline from nightly runs on main (latest: 2026-04-09T04:46:50Z). Trigger benchmark-baseline to refresh.