appkitr (`master` / development version)

appkitr 2.0.0.5

Drop the .sps file extension from the package description, which CRAN’s spell check flagged as a misspelling.

Wrap the create_payout_scheme() example in if (interactive()) instead of \dontrun{}.

Fix participation_table(): parse timestamp columns before comparing them
Quote ‘GESIS AppKit’ as a software name in DESCRIPTION.
Replace \dontrun{} with runnable examples in read_appkit_survey() and read_appkit_surveys() and add small example data for that in inst/extdata/.
Replacecat() with message() in utils.R (helpers for create_payout_scheme()).

Prepared the package for CRAN submission: standard Apache license specification in DESCRIPTION, title in title case, corrected URLs, and exclusion of non-standard files from the built package
inspect_variables(), inspect_variable(), and drop_participants() now have runnable examples based on the bundled appkit_survey_entry data
Added an internal registry of AppKit export metadata columns and a shared column validator
Ensure all functions are column-agnostic with column names supplied via function arguments
Updated and extended the synthetic example data (#41)
read_appkit_survey() and read_appkit_surveys() now convert numeric missing codes (e.g. -1) to NA in numeric columns correctly; the default na_values is now a type-preserving list
Added participation_table() to report per participant and survey, the number of committed questionnaires or the completion percentage. Rows scheduled in the future are excluded by default via include_future_scheduled, since they are already present in the export but not yet answerable. (#11)
Added calculate_payout() to calculate payout per participant, supporting a fixed amount per committed questionnaire and/or a bonus paid once a minimum number of committed questionnaires is reached. (#33)
Added create_payout_scheme() to interactively build a payout scheme step by step. It’s optional and it requires an interactive session. (#33)

read_appkit_survey() and read_appkit_surveys() now treat "N/A" as a missing value by default, matching the default value used in GESIS AppKit >= 2.0.0 exports (#35)
read_appkit_survey() and read_appkit_surveys() now parse the expired timestamp column added in GESIS AppKit >= 2.0.0 exports (#39)

Added drop_participants() to remove specific participants from survey data frames or lists of data frames (#27)
read_appkit_surveys() now throws an informative error when no survey directories are found (#21)
Added ISO 8601 timestamp format support for AppKit >= 1.17.0 exports (#25)
Added parsing of exported and lastStatusChange timestamp columns (#29)

Added duplicate_names parameter to read_appkit_surveys() function (#16)
- "error" (default): Throw error when duplicate survey names are found
- "merge": Combine surveys with the same name using rbind()
- "distinct": Keep surveys distinct by adding numeric suffixes
Fixed an issue with documentation site generation in GitLab CI/CD pipeline
Shorten test data folder names to avoid path length warnings when installing from GitLab (#20)