community activities samples

[viogroza]

Added coded sample for Credentials
Added coded sample for Database
Added coded sample for FTP
Added coded sample for Java
Added coded sample for Python

[alexandru-petre]

Code review of the 5 new coded sample projects. Substantive review surface = the 5 *.cs workflow files + 2 .java sources + README; auto-generated XAML / entry-points.json / .codedworkflows/Connections*.cs were skipped.

Verdict: NEEDS CHANGES.

Highlights (full inline comments below):

• P0 Broken Console.WriteLine interpolation in Credentials sample (missing $).
• P1 Delay(...) task discarded in Python sample — no actual wait happens.
• P1 Python scope uses sync using instead of await using, inconsistent with FTP/Java siblings.
• P5 Credentials sample logs Password to console — sample teaches the wrong instinct.
• P5 Hardcoded FTP credentials with no pointer to credential assets / vault.
• P5 SQL built via string.Format — sample teaches the canonical SQL-injection pattern.
• P2 Namespace mismatches: DatabaseCodedDemo (folder is CodedDatabaseDemo) and bare Java.
• P3 Unused using directives in every new .cs file (FTP sample still imports UiPath.Excel.* from copy-paste).
• P3 Hardcoded JDK 25.0.2.10 / Python 3.13 paths break the sample for everyone except the author.

Positive observations:

• Good await using pattern in FTP and Java samples.
• Java sources (Coordinate.java, StaticMethods.java) are clean and appropriately demo-scoped.
• README entries follow the existing one-line, alphabetized convention.