playground: fix config in CSE/NextGen modes

[Lloyd-Pottiger]

This PR fixes a few playground configuration issues for CSE/NextGen modes.

• Record the bound component version on playground instances when binpath != ""
• Add missing CSE TiDB options (columnar store type, fulltext index, TiFlash addresses)
• Allow NextGen system TiDB to use multiple tikv-worker endpoints

[ti-chi-bot]

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 31.25000% with 22 lines in your changes missing coverage. Please review.
✅ Project coverage is 41.53%. Comparing base (0890ea9) to head (e0a9aa0).

Files with missing lines	Patch %	Lines
components/playground/instance/tidb_config.go	0.00%	11 Missing ⚠️
components/playground-ng/proc/tidb_config.go	0.00%	7 Missing ⚠️
components/playground-ng/service/tidb.go	69.23%	3 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2666   +/-   ##
=======================================
  Coverage   41.52%   41.53%           
=======================================
  Files         417      417           
  Lines       45579    45595   +16     
=======================================
+ Hits        18926    18934    +8     
- Misses      24109    24115    +6     
- Partials     2544     2546    +2     

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[breezewish]

We now have a https://github.com/pingcap/tiup/tree/master/components/playground-ng could you try to fix over it as well? :)

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2026-01-13 14:22:03.411634189 +0000 UTC m=+367367.473499094: ☑️ agreed by breezewish.
• 2026-01-14 07:12:29.225101464 +0000 UTC m=+427993.286966373: ✖️🔁 reset by Lloyd-Pottiger.
• 2026-01-15 16:19:56.759600526 +0000 UTC m=+78824.373557372: ☑️ agreed by breezewish.

[Lloyd-Pottiger]

/cc @xhebox