fix(oracle): resolve bind parameter mismatch for generated time series

[Tankilevitch]

Summary

Fixes Oracle NJS-098 bind parameter mismatch errors that occurred when queries with rolling windows generated time series. Previously, generated time series columns (date_from/date_to) were incorrectly treated as bind parameters, causing a mismatch between placeholder count (10) and provided values (6).

Changes

• Refactored Oracle date/time casting logic with helper methods
• Added isIdentifierToken() to detect column identifiers vs bind parameters
• Added toTimestampTz() to centralize timestamp conversion logic
• Column identifiers from generated time series now use direct references
• Bind parameters are preserved only for filter values
• Added comprehensive JSDoc documentation

Technical Details

Before: All values (including date_from/date_to) were treated as bind parameters with format :"date_from", causing 10 bind placeholders but only 6 parameter values.

After: Column identifiers are detected and used directly: TO_TIMESTAMP_TZ(date_from, ...) while bind parameters (?) continue to use :"?". This results in correct 6 bind placeholders matching 6 parameter values.

Testing

• Added comprehensive test: does not bind generated time series date_from/date_to
• All 59 Oracle query tests pass
• Verified generated SQL has correct bind parameter count
• Test includes SQL output inspection for debugging

Related Issues

Fixes Oracle NJS-098 errors: "10 bind placeholders were used in the SQL statement but 6 bind values were provided"

Checklist

• Code follows project conventions
• Tests added/updated and passing
• Documentation updated with JSDoc
• No breaking changes
• Linting issues resolved (pre-existing warnings in other files)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 55.45%. Comparing base (b0b011e) to head (cafc7fb).

❗ There is a different number of reports uploaded between BASE (b0b011e) and HEAD (cafc7fb). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (b0b011e)	HEAD (cafc7fb)
cubesql	1	0

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #10108       +/-   ##
===========================================
- Coverage   78.10%   55.45%   -22.66%     
===========================================
  Files         457      207      -250     
  Lines       90994    16503    -74491     
  Branches     3330     3244       -86     
===========================================
- Hits        71070     9151    -61919     
+ Misses      19451     6893    -12558     
+ Partials      473      459       -14     

Flag	Coverage Δ
cube-backend	55.45% <100.00%> (+0.34%)	⬆️
cubesql	?

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