Make strategy switch setup fork friendly

[Pigbibi]

Summary

• add English and Chinese fork guides for deploying the strategy switch console
• make platform repository mappings configurable for GitHub Actions, local runtime scripts, and the Worker
• update Worker README, wrangler example, and tests so fork users can replace owner/repo values without source edits

Tests

• jq empty web/strategy-switch-console/account-options.example.json web/strategy-switch-console/strategy-profiles.example.json
• node --experimental-default-type=module tests/strategy_switch_worker_validation.mjs
• sed -n '/<script>/,/</script>/p' web/strategy-switch-console/index.html | sed '1d;' | node --check --input-type=commonjs
• node --check --input-type=module < web/strategy-switch-console/page_asset.js
• node --check --input-type=module < web/strategy-switch-console/strategy_profiles_asset.js
• node --check --input-type=module < web/strategy-switch-console/worker.js
• python3 scripts/runtime_settings.py validate
• python3 -m unittest discover -s tests -v
• python3 scripts/runtime_settings.py repository longbridge
• RUNTIME_SETTINGS_LONGBRIDGE_REPO=ForkOrg/LongBridgePlatform python3 scripts/runtime_settings.py repository longbridge
• git diff --check