League-of-Fabulous-Developers/FoundryVTT-Fabula-Ultima
Jan 2025 – Jul 2026
13 Months active
Languages Used
CSSHTMLJavaScriptJSONHandlebarsMarkdownYAMLSCSS
Technical Skills
CSSHTMLHandlebarsJavaScriptNode.jsUI/UX design
Sören Jahns
PROFILE
Sören Jahns
Over thirteen months, contributed to League-of-Fabulous-Developers/FoundryVTT-Fabula-Ultima by engineering new gameplay systems, modernizing UI components, and maintaining robust data models for a FoundryVTT-based role-playing game module. Delivered features such as drag-and-drop inventory, custom weapon support, and configurable rules, while refactoring legacy code for platform compatibility and improved maintainability. Applied JavaScript, CSS, and Handlebars to streamline chat rendering, enhance accessibility, and ensure data integrity across actor, item, and combat systems. Addressed over eighty bugs, focusing on stability, user experience, and extensibility. Emphasized asynchronous programming, modular architecture, and rigorous debugging to support reliable, scalable, and user-friendly game development workflows.
Overall Statistics
Feature vs Bugs
37%Features
Repository Contributions
214Total
Bugs
84
Commits
214
Features
49
Lines of code
289,191
Activity Months13
Your Network
14 peopleWork History
July 2026
5 Commits • 2 Features
Jul 1, 2026July 2026: Implemented Foundry V14 compatibility and stable active effects handling; fixed critical data-cleaning and context-resolution bugs that blocked class feature creation/validation; and improved code reliability via async/await refactor and linting. These changes reduced release risk, improved actor/item import/creation workflows, and enhanced maintainability across the Fabula Ultima extension.
5 Commits • 2 Features
Jul 1, 2026July 2026: Implemented Foundry V14 compatibility and stable active effects handling; fixed critical data-cleaning and context-resolution bugs that blocked class feature creation/validation; and improved code reliability via async/await refactor and linting. These changes reduced release risk, improved actor/item import/creation workflows, and enhanced maintainability across the Fabula Ultima extension.
July 2026
June 2026
25 Commits • 7 Features
Jun 1, 2026June 2026 monthly focus for League of Fabulous Developers / FoundryVTT-Fabula-Ultima. Delivered a mix of new features, UI improvements, and stability fixes across the Fabula Ultima project, with a strong emphasis on in-game data modeling, UI consistency, and configurable rules to support varied campaign needs. Key changes include Mnemosphere skills referencing for companions, updated resource bars and sheet headers, reordering spell tab for clearer spell/ritual separation, and improved targeting behavior and support checks. Several bugfix initiatives improved reliability of theming, chat effects, drag-and-drop, and actor selection defaults.
June 2026
25 Commits • 7 Features
Jun 1, 2026June 2026 monthly focus for League of Fabulous Developers / FoundryVTT-Fabula-Ultima. Delivered a mix of new features, UI improvements, and stability fixes across the Fabula Ultima project, with a strong emphasis on in-game data modeling, UI consistency, and configurable rules to support varied campaign needs. Key changes include Mnemosphere skills referencing for companions, updated resource bars and sheet headers, reordering spell tab for clearer spell/ritual separation, and improved targeting behavior and support checks. Several bugfix initiatives improved reliability of theming, chat effects, drag-and-drop, and actor selection defaults.
May 2026
24 Commits • 7 Features
May 1, 2026Month: 2026-05 — This period focused on delivering UX improvements, data integrity enhancements, and targeted stability fixes across FoundryVTT-Fabula-Ultima. The team expanded capabilities, improved configurability, and reinforced core rule/asset handling to drive faster content authoring, reduced support overhead, and a more reliable runtime experience for players and GMs. 1) Key features delivered - Drag & drop item transfer via inventory pipeline (repo: League-of-Fabulous-Developers/FoundryVTT-Fabula-Ultima) enabling item movement between owned sheets. - Vehicle Modules in Stash and Party: support for class features to define and render Vehicle Modules in stash/party contexts. - Keep images and/or names intact during item migration: preservation of item media/names to avoid rework. - Disable theming of core Foundry: user-configurable theming toggle to reduce UI churn and performance concerns. - Add custom weapon support for item customizer: extended item customization to support custom weapons. 2) Major bugs fixed - Check rule predicate triggers when it should not: refined check-attributes preconditions; updated rendering paths (Flash of Insight) to render via renderCheck (#1123). - Damage customizer dialog has incorrect title (#1129): corrected dialog title text. - Inspect button in study chat message only works once (#1128): removed single-click restriction on the inspect action. - Actor sheet functionality breaks for actors in compendiums (#1136): replaced fromUuidSync with fromUuid to stabilize data loading. - Party sheet does not update properly when contained actors are updated (#1134): added updateActor hook to trigger re-renders as needed. - Retarget does not revert automatically applied damage (#1135): added auto-revert logic to check-retarget.mjs and data hooks. - Malformed HTML in Zero Power descriptions can break preview in feature table (#1139): wrapped tooltips in <aside> to fix rendering issues. - Compendium link in Advancement view only covers a small part of the icon (#1151): adjusted rendering to cover full icon area. 3) Overall impact and accomplishments - Substantial UX gains with drag & drop transfers and preserved item metadata, reducing manual workflows and error-prone re-entry. - Increased stability and data integrity for actors, compendium-derived content, and NPC/advancement views, lowering support tickets and churn. - Improved configurability and branding flexibility with theming controls, and extended customization capabilities via the item customizer. - Broadened capability surface for future content by standardizing UUID handling and robust event hooks across sheets. 4) Technologies/skills demonstrated - FoundryVTT API usage (Inventory pipeline, fromUuid vs fromUuidSync, UI hooks). - TypeScript/JavaScript code quality, refactoring and modernization (replacing deprecated APIs, improved HTML structure). - UI/UX and data integrity focus (drag & drop, item migration fidelity, robust theming controls). - Debugging, performance awareness, and cross-module coordination (composer-like fixes across multiple subsystems).
24 Commits • 7 Features
May 1, 2026Month: 2026-05 — This period focused on delivering UX improvements, data integrity enhancements, and targeted stability fixes across FoundryVTT-Fabula-Ultima. The team expanded capabilities, improved configurability, and reinforced core rule/asset handling to drive faster content authoring, reduced support overhead, and a more reliable runtime experience for players and GMs. 1) Key features delivered - Drag & drop item transfer via inventory pipeline (repo: League-of-Fabulous-Developers/FoundryVTT-Fabula-Ultima) enabling item movement between owned sheets. - Vehicle Modules in Stash and Party: support for class features to define and render Vehicle Modules in stash/party contexts. - Keep images and/or names intact during item migration: preservation of item media/names to avoid rework. - Disable theming of core Foundry: user-configurable theming toggle to reduce UI churn and performance concerns. - Add custom weapon support for item customizer: extended item customization to support custom weapons. 2) Major bugs fixed - Check rule predicate triggers when it should not: refined check-attributes preconditions; updated rendering paths (Flash of Insight) to render via renderCheck (#1123). - Damage customizer dialog has incorrect title (#1129): corrected dialog title text. - Inspect button in study chat message only works once (#1128): removed single-click restriction on the inspect action. - Actor sheet functionality breaks for actors in compendiums (#1136): replaced fromUuidSync with fromUuid to stabilize data loading. - Party sheet does not update properly when contained actors are updated (#1134): added updateActor hook to trigger re-renders as needed. - Retarget does not revert automatically applied damage (#1135): added auto-revert logic to check-retarget.mjs and data hooks. - Malformed HTML in Zero Power descriptions can break preview in feature table (#1139): wrapped tooltips in <aside> to fix rendering issues. - Compendium link in Advancement view only covers a small part of the icon (#1151): adjusted rendering to cover full icon area. 3) Overall impact and accomplishments - Substantial UX gains with drag & drop transfers and preserved item metadata, reducing manual workflows and error-prone re-entry. - Increased stability and data integrity for actors, compendium-derived content, and NPC/advancement views, lowering support tickets and churn. - Improved configurability and branding flexibility with theming controls, and extended customization capabilities via the item customizer. - Broadened capability surface for future content by standardizing UUID handling and robust event hooks across sheets. 4) Technologies/skills demonstrated - FoundryVTT API usage (Inventory pipeline, fromUuid vs fromUuidSync, UI hooks). - TypeScript/JavaScript code quality, refactoring and modernization (replacing deprecated APIs, improved HTML structure). - UI/UX and data integrity focus (drag & drop, item migration fidelity, robust theming controls). - Debugging, performance awareness, and cross-module coordination (composer-like fixes across multiple subsystems).
May 2026
February 2026
1 Commits
Feb 1, 2026February 2026 monthly summary for League-of-Fabulous-Developers/FoundryVTT-Fabula-Ultima: Stabilized critical hit rendering to ensure combat visuals and outcomes reflect actual results. Focused on correctness in the pfuCheckOutcome helper to prevent misrendered critical hits and reduce user confusion, with a targeted, low-risk fix.
February 2026
1 Commits
Feb 1, 2026February 2026 monthly summary for League-of-Fabulous-Developers/FoundryVTT-Fabula-Ultima: Stabilized critical hit rendering to ensure combat visuals and outcomes reflect actual results. Focused on correctness in the pfuCheckOutcome helper to prevent misrendered critical hits and reduce user confusion, with a targeted, low-risk fix.
November 2025
8 Commits • 1 Features
Nov 1, 20252025-11 Monthly Summary for League-of-Fabulous-Developers/FoundryVTT-Fabula-Ultima focusing on delivering robust UX, data integrity, and reliable gameplay calculations for Fabula Ultima on Foundry VTT.
8 Commits • 1 Features
Nov 1, 20252025-11 Monthly Summary for League-of-Fabulous-Developers/FoundryVTT-Fabula-Ultima focusing on delivering robust UX, data integrity, and reliable gameplay calculations for Fabula Ultima on Foundry VTT.
November 2025
October 2025
34 Commits • 3 Features
Oct 1, 2025Month 2025-10 highlights focused on delivering tangible business value and hardening the Fabula Ultima module for FoundryVTT. Key features were delivered with robust UI improvements and stable integrations, while an extensive set of bug fixes improved reliability across actor/item sheets, transfers, and data integrity. Notable work included introduction of Technospheres with transfer fixes and UI adjustments, enhancements to context menus, and significant maintenance and housekeeping for stability.
October 2025
34 Commits • 3 Features
Oct 1, 2025Month 2025-10 highlights focused on delivering tangible business value and hardening the Fabula Ultima module for FoundryVTT. Key features were delivered with robust UI improvements and stable integrations, while an extensive set of bug fixes improved reliability across actor/item sheets, transfers, and data integrity. Notable work included introduction of Technospheres with transfer fixes and UI adjustments, enhancements to context menus, and significant maintenance and housekeeping for stability.
September 2025
17 Commits • 5 Features
Sep 1, 2025September 2025 focused on stability, usability, and extensibility for the FoundryVTT-Fabula-Ultima module. Key outcomes include robust combat tracker and turn management, safe handling of Active Effects, UI/UX improvements across item sheets and growth clock, and the introduction of Custom Weapons with sheet integration. These changes reduce edge-case bugs, improve player experience, and enable richer character customization while maintaining code maintainability through refactoring and styling improvements.
17 Commits • 5 Features
Sep 1, 2025September 2025 focused on stability, usability, and extensibility for the FoundryVTT-Fabula-Ultima module. Key outcomes include robust combat tracker and turn management, safe handling of Active Effects, UI/UX improvements across item sheets and growth clock, and the introduction of Custom Weapons with sheet integration. These changes reduce edge-case bugs, improve player experience, and enable richer character customization while maintaining code maintainability through refactoring and styling improvements.
September 2025
August 2025
9 Commits • 6 Features
Aug 1, 2025Aug 2025 monthly summary for League-of-Fabulous-Developers/FoundryVTT-Fabula-Ultima: Delivered a set of feature-rich improvements and essential maintenance across UI, data modeling, and combat systems. Key features include Infusions Management Improvements (enhanced infusion selection UI, interaction logic, accessibility, and resource-expenditure options), Camp Activities (data model and templates for in-app camp activities), Weapon System Improvements (corrected weapon quality display in chat and dynamic critical thresholds driven by actor flags), Actor Sheets Drag-and-Drop Enhancements (reliable item reordering across lists), Metacurrency Tracker UI Polish (modular CSS for improved visuals), and Codebase Maintenance (removing deprecated manifest attributes to align with current standards). Impact: improved user decision-making, reduced combat errors, streamlined campaign setup, and simplified maintenance. Technologies/skills demonstrated: JavaScript/TypeScript, Foundry VTT API usage, CSS modularization, accessibility practices, and feature-flag driven configuration.
August 2025
9 Commits • 6 Features
Aug 1, 2025Aug 2025 monthly summary for League-of-Fabulous-Developers/FoundryVTT-Fabula-Ultima: Delivered a set of feature-rich improvements and essential maintenance across UI, data modeling, and combat systems. Key features include Infusions Management Improvements (enhanced infusion selection UI, interaction logic, accessibility, and resource-expenditure options), Camp Activities (data model and templates for in-app camp activities), Weapon System Improvements (corrected weapon quality display in chat and dynamic critical thresholds driven by actor flags), Actor Sheets Drag-and-Drop Enhancements (reliable item reordering across lists), Metacurrency Tracker UI Polish (modular CSS for improved visuals), and Codebase Maintenance (removing deprecated manifest attributes to align with current standards). Impact: improved user decision-making, reduced combat errors, streamlined campaign setup, and simplified maintenance. Technologies/skills demonstrated: JavaScript/TypeScript, Foundry VTT API usage, CSS modularization, accessibility practices, and feature-flag driven configuration.
July 2025
49 Commits • 8 Features
Jul 1, 2025July 2025 was defined by UI modernization, API consolidation, and scalable architecture work that stabilizes core flows and enables faster feature delivery for Fabula Ultima in FoundryVTT. Key features shipped include UI modernization with DialogV2 migration and chat context menu updates, and extensive AppV2 framework migrations across multiple applications. A broad set of bug fixes improved reliability and UX (clocks/resource trackers, Level Up and item interactions, actor notes, and item migrations), while code quality and deprecation cleanup reduced technical debt and aligned the codebase with modern patterns. These efforts collectively enhance user experience, reduce support risk, and position the platform for repeatable, high-velocity delivery.
49 Commits • 8 Features
Jul 1, 2025July 2025 was defined by UI modernization, API consolidation, and scalable architecture work that stabilizes core flows and enables faster feature delivery for Fabula Ultima in FoundryVTT. Key features shipped include UI modernization with DialogV2 migration and chat context menu updates, and extensive AppV2 framework migrations across multiple applications. A broad set of bug fixes improved reliability and UX (clocks/resource trackers, Level Up and item interactions, actor notes, and item migrations), while code quality and deprecation cleanup reduced technical debt and aligned the codebase with modern patterns. These efforts collectively enhance user experience, reduce support risk, and position the platform for repeatable, high-velocity delivery.
July 2025
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025: Delivered platform compatibility updates and stability fixes for FoundryVTT Fabula Ultima. Key feature: minimum FoundryVTT version bumped to 12 to align with latest platform capabilities and user expectations. Major bug fixed: TypeError mitigation by filtering falsy trait values prior to flattening traits, ensuring robust operation with Weapon Modules. Impact: improved reliability on newer FoundryVTT builds, smoother user experience, and reduced risk of runtime errors; supports ongoing compatibility with platform updates and reduces potential support overhead. Technologies/skills demonstrated: JavaScript/TypeScript, defensive data processing, commit hygiene, and end-to-end validation of platform compatibility. Commit references: 8ee0606010c814bc93fcdeebbfb917acf64b79b8; 99968daf1b842dac7b09555362ef0462f5d69a40.
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025: Delivered platform compatibility updates and stability fixes for FoundryVTT Fabula Ultima. Key feature: minimum FoundryVTT version bumped to 12 to align with latest platform capabilities and user expectations. Major bug fixed: TypeError mitigation by filtering falsy trait values prior to flattening traits, ensuring robust operation with Weapon Modules. Impact: improved reliability on newer FoundryVTT builds, smoother user experience, and reduced risk of runtime errors; supports ongoing compatibility with platform updates and reduces potential support overhead. Technologies/skills demonstrated: JavaScript/TypeScript, defensive data processing, commit hygiene, and end-to-end validation of platform compatibility. Commit references: 8ee0606010c814bc93fcdeebbfb917acf64b79b8; 99968daf1b842dac7b09555362ef0462f5d69a40.
March 2025
18 Commits • 6 Features
Mar 1, 2025March 2025 Highlights for League-of-Fabulous-Developers/FoundryVTT-Fabula-Ultima: Delivered deep gameplay enhancements across multiple systems (Garden with Growth Clock and Floralist v2; Gourmet Cooking with cookbook and Natural Fantasy styling; Invocations/Wellsprings for expanded elemental play; Character Class System expansion with clearer UI naming). Strengthened reliability with targeted bug fixes in combat calculations and Chanter data handling. Improved UI/UX for clocks and chat readability, and refined procedural rules descriptions to reduce user confusion. Migration and styling efforts aligned with Natural Fantasy enabled ongoing feature evolution while maintaining a cohesive user experience. Demonstrates end-to-end capabilities: data modeling, UI/UX engineering, CSS integration, and robust bug triage, driving higher player engagement and a maintainable codebase.
18 Commits • 6 Features
Mar 1, 2025March 2025 Highlights for League-of-Fabulous-Developers/FoundryVTT-Fabula-Ultima: Delivered deep gameplay enhancements across multiple systems (Garden with Growth Clock and Floralist v2; Gourmet Cooking with cookbook and Natural Fantasy styling; Invocations/Wellsprings for expanded elemental play; Character Class System expansion with clearer UI naming). Strengthened reliability with targeted bug fixes in combat calculations and Chanter data handling. Improved UI/UX for clocks and chat readability, and refined procedural rules descriptions to reduce user confusion. Migration and styling efforts aligned with Natural Fantasy enabled ongoing feature evolution while maintaining a cohesive user experience. Demonstrates end-to-end capabilities: data modeling, UI/UX engineering, CSS integration, and robust bug triage, driving higher player engagement and a maintainable codebase.
March 2025
February 2025
3 Commits • 1 Features
Feb 1, 2025February 2025 Monthly Summary for League-of-Fabulous-Developers/FoundryVTT-Fabula-Ultima: Focused on enhancing the skill system with weapon context and accuracy displays. Delivered weapon-contextual skill checks, improved accuracy calculations and bonus handling, and reintroduced skill tags to accuracy displays. These changes improved data visibility, reduced ambiguity in skill resolutions, and enabled faster, more reliable decision-making for GMs and players.
February 2025
3 Commits • 1 Features
Feb 1, 2025February 2025 Monthly Summary for League-of-Fabulous-Developers/FoundryVTT-Fabula-Ultima: Focused on enhancing the skill system with weapon context and accuracy displays. Delivered weapon-contextual skill checks, improved accuracy calculations and bonus handling, and reintroduced skill tags to accuracy displays. These changes improved data visibility, reduced ambiguity in skill resolutions, and enabled faster, more reliable decision-making for GMs and players.
January 2025
19 Commits • 2 Features
Jan 1, 2025For 2025-01, League-of-Fabulous-Developers/FoundryVTT-Fabula-Ultima delivered a major UI and data-model overhaul, coupled with reliability and UX improvements that reduce maintenance burden and improve in-session workflows. Key scope included a comprehensive UI/Chat Card Rendering and Data Model Overhaul across accessories, armor, behavior, consumables, heroics, project, treasures, rituals, weapons, and related data structures; introduced tag mappings, common sections, and deprecations to streamline the UI and data flow. In parallel, critical bug fixes tightened infusion checks, NPC equipment handling, and persisted user actions state to support safe reversions. The combined work enhances UI consistency, pipeline UX, and system reliability, enabling faster iteration and more accurate game state representations, with strong technical grounding in data modeling and front-end discipline.
19 Commits • 2 Features
Jan 1, 2025For 2025-01, League-of-Fabulous-Developers/FoundryVTT-Fabula-Ultima delivered a major UI and data-model overhaul, coupled with reliability and UX improvements that reduce maintenance burden and improve in-session workflows. Key scope included a comprehensive UI/Chat Card Rendering and Data Model Overhaul across accessories, armor, behavior, consumables, heroics, project, treasures, rituals, weapons, and related data structures; introduced tag mappings, common sections, and deprecations to streamline the UI and data flow. In parallel, critical bug fixes tightened infusion checks, NPC equipment handling, and persisted user actions state to support safe reversions. The combined work enhances UI consistency, pipeline UX, and system reliability, enabling faster iteration and more accurate game state representations, with strong technical grounding in data modeling and front-end discipline.
January 2025
Activity
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Quality Metrics
Correctness91.8%
Maintainability86.4%
Architecture86.0%
Performance85.4%
AI Usage27.0%
Skills & Technologies
Programming Languages
CSSHTMLHandlebarsJSONJavaScriptMarkdownSCSSYAML
Technical Skills
Asynchronous ProgrammingBackend DevelopmentCSSCSS stylingDOM ManipulationDOM manipulationData ModelingDebuggingES ModulesESLintESLint configurationFoundry VTTFoundryVTTFoundryVTT APIFoundryVTT Development
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