Liberate: add /migrate allias for /liberate

[nightnei]

Related issues

• Fixes STU-1973

How AI was used in this PR

AI assisted

Proposed Changes

In the data-liberation-agent, there's an alias to the /liberate skill called /migrate that Matthew added because the word liberate is probably not something that folks would easily remember.

With this PR, we are adding the alias as the first step, and later we can see how it goes.

Testing Instructions

1. npm run cli:build
2. node apps/cli/dist/cli/main.mjs code
3. Type "/mig" and assert that you see the command /migrate with mentioning that it's an allias for /liberate

[sejas]

I was able to invoke the Liberate skill using /migrate command.

Another alternative we could consider is keeping the /liberate command and just allowing to search by the description where we could mention migrate instead of import.

[wpmobilebot]

📊 Performance Test Results

Comparing a35671b vs trunk

app-size

Metric	trunk	a35671b	Diff	Change
App Size (Mac)	1411.96 MB	1411.97 MB	+0.00 MB	⚪ 0.0%

site-editor

Metric	trunk	a35671b	Diff	Change
load	1052 ms	1056 ms	+4 ms	⚪ 0.0%

site-startup

Metric	trunk	a35671b	Diff	Change
siteCreation	6518 ms	6510 ms	8 ms	⚪ 0.0%
siteStartup	2385 ms	2392 ms	+7 ms	⚪ 0.0%

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Results are median values from multiple test runs.

Legend: 🟢 Improvement (faster) | 🔴 Regression (slower) | ⚪ No change (<50ms diff)