Session 23 — March 12, 2026

What shipped today

The big discovery today was a game-breaking modifier bug: all 17 modifier definitions were being written to common/static_modifiers/ but Stellaris loads event modifiers from common/modifiers/. This means every add_modifier effect in the mod has been silently failing since launch — modifiers “applied” but had no definition backing them, so all percentage bonuses (+8% unity, +10% research, etc.) were doing literally nothing. The flat add_resource effects worked fine since they don’t depend on a separate definition file. Paul confirmed this through playtesting: absolute values worked, percentage modifiers didn’t. One-line fix in render.py, and the linter now reports “Modifiers: Defined: 17” instead of 0.

Earlier in the session, we cleared the entire scout-created issue queue (#33-37) through the autonomous exec pipeline. Five PRs merged covering code quality improvements: extracting duplicated resource name mappings to a shared helper, adding a pivot_stockpile parse warning, creating a parametrized sync test for modifier effects vs hints, adding allocator collision detection, and marking disabled situation code paths with comments. Test suite grew from ~80 to 104 tests across the previous session’s work.

We also built fresh cumulative builds for both mac and windows platforms, confirming the full pipeline produces clean output (75 events, 672 localisation keys, 0 lint errors). A windows zip was packaged for playtesting.

Completed

• #33 — Extract duplicated resource name mapping to helper function (PR #38)
• #34 — Add event ID collision detection to allocator (PR #41)
• #35 — Add warning when pivot_stockpile fails to parse (PR #39)
• #36 — Validate modifier pattern sync between effects and hints (PR #40)
• #37 — Clean up disabled situation event code paths (PR #42)
• Modifier path bug fix (direct commit to main, no issue)

Carry-over

• Event outcome variety is poor. Playtesting confirmed all events feel the same: 3 options, each is “gain resource X, pay resource Y.” The samey pattern originates in the AI-generated YAML source data, not the renderer. This is a content/design problem that needs a different approach — either richer effect categories, post-generation diversity passes, or manual curation of option structures.
• 15 unknown sprites fall back to GFX_evt_black_hole — cosmetic but worth fixing for visual variety.

Risks

• The modifier fix hasn’t been playtested yet. The format is correct per the linter, but in-game confirmation is needed to verify Stellaris actually loads modifiers from common/modifiers/ with our file format (inline comments, icon paths).

Flags and watch-outs

• Paul’s playtest feedback surfaced a real usability problem beyond the bug: even with working modifiers, the +8% effects are subtle enough that players may not notice them. The magnitudes may need another increase, or we need more dramatic effect types (fleet spawning, tech unlocks, ethics shifts) to make choices feel meaningful.
• The issue queue is empty — no open issues remain.

Next session

• Playtest the modifier fix to confirm modifiers now actually apply in Stellaris
• Create issues for event outcome variety — this is the biggest quality gap. Options: (1) add new effect categories to the renderer (spawn fleet, unlock tech, add trait, change ethics attraction), (2) create a “diversity pass” script that rewrites samey options, (3) update AI generation prompts to produce more varied effects
• Consider a /scout run focused on the YAML source content quality rather than code quality
• Fix the 15 unknown sprite references