feat(sheets): combine chart workflows and special chart types

[zhengzhijiej-tech]

Problem

Chart workflow improvements and bubble/waterfall/pareto support were developed on separate branches. Keeping them separate leaves the semantic shortcuts, batch paths, generated schemas, and bundled Sheets skill out of sync.

Changes

• add semantic chart create/config/data-update shortcuts and dedicated chart batch entry points
• preserve partial chart updates, detached headers, cross-sheet ranges, color themes, and batch error recovery
• support bubble, waterfall, and pareto charts across examples, schemas, readback, and generated flags
• add semantic bubble role flags for key/x/y/group/size on create and data update
• sync the bundled lark-sheets skill from the combined sheet-skill-spec output, including the chart layout check script
• keep generic +batch-update compatible with chart operations while guiding pure chart batches to the dedicated shortcuts

Validation

• go test -count=1 ./shortcuts/sheets/...
• make unit-test
• make vet
• make fmt-check
• node scripts/skill-format-check/index.js skills
• make quality-gate QUALITY_GATE_CHANGED_FROM=origin/main

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[codecov]

Codecov Report

❌ Patch coverage is 65.05552% with 535 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.26%. Comparing base (755daa4) to head (c79a752).

Files with missing lines	Patch %	Lines
shortcuts/sheets/lark_sheet_chart.go	63.91%	260 Missing and 134 partials ⚠️
shortcuts/sheets/lark_sheet_batch_update.go	63.87%	88 Missing and 37 partials ⚠️
shortcuts/sheets/flag_schema.go	72.97%	7 Missing and 3 partials ⚠️
shortcuts/sheets/batch_op_dispatch.go	91.11%	4 Missing ⚠️
shortcuts/sheets/flag_view.go	66.66%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2374      +/-   ##
==========================================
- Coverage   76.41%   76.26%   -0.15%     
==========================================
  Files        1047     1048       +1     
  Lines      115504   116992    +1488     
==========================================
+ Hits        88260    89224     +964     
- Misses      20443    20791     +348     
- Partials     6801     6977     +176     

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[github-actions]

PR Quality Summary

CI did not complete successfully. Use the failed check links below to decide whether this PR needs a code change or a rerun.

Failed checks

• lint — failure — details
• deadcode — failure — details
• results — failure — details

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