companion: primer library — decide-after dice (2024 Guidance/Resistance)

[tohuw]

Follow-up to #23 (merged): one library addition learned in live play tonight.

The 2024 Guidance/Resistance template lets the d4 be rolled after seeing the check or save result, and the die is spent only when rolled — an unspent d4 carries to the next roll within the spell's minute. For characters who have these cantrips, this is the single tip that turns them from forgettable into a habit, so it belongs in the primer's what-new-players-miss library, paired with a concrete casting cue.

Rebased onto master post-merge; respects the codex → primer rename. Companion verify floor green; the stale recreated companion/learners-codex branch (pre-rename base) has been deleted to avoid an accidental revert-merge.

🤖 Generated with Claude Code

[tohuw]

Landing the two skeleton commits on master directly (394eaed, 48130fb — masonry ability cards, rem-based column width) and dropping the primer bullet, which is wrong for 2024.

SRD 5.2.1:

Guidance — Concentration, up to 1 minute. You touch a willing creature and choose a skill. Until the spell ends, the creature adds 1d4 to any ability check using the chosen skill.

Resistance — Concentration, up to 1 minute. You touch a willing creature and choose a damage type… When the creature takes damage of the chosen type before the spell ends, the creature reduces the total damage taken by 1d4. A creature can benefit from this spell only once per turn.

So there is no die to "spend" and none to carry: Guidance applies to every check with the chosen skill for the duration. And Resistance is damage reduction in 2024, not a saving-throw bonus, so "the check or save result" is wrong on its face. "Decide-after dice" is 2014-era framing.

The bullet also ran against its own list's rule — "Phrase each as a true fact, never as advice" — in its second half.

The slot is still worth filling, since these two cantrips changing shape is exactly what catches a player who learned 2014: Guidance went from a single check to a skill-scoped bonus lasting the minute, and Resistance stopped being a save bonus and became once-per-turn damage reduction. Left unwritten here rather than smuggled into a close.