diff --git a/config.lua b/config.lua
index fa1d7a1..dbb8ff3 100644
--- a/config.lua
+++ b/config.lua
@@ -358,6 +358,17 @@ return {
     --         summarize_on_evict = true,
     --         summarizer_model   = "fast",   -- model name in models{}
     --         max_summary_chars  = 2000,
+    --
+    --         -- #101 (proactive periodic summarization). When set,
+    --         -- enforce_cadence fires every N appends (before
+    --         -- enforce_budget) and folds turns OLDER than
+    --         -- summarize_keep_recent into ctx.summary. Goal: keep the
+    --         -- wire prompt tight from the start so small local models
+    --         -- aren't fed near-budget context until eviction. Composes
+    --         -- with summarize_on_evict (same summarize_fn closure;
+    --         -- different trigger). Suppressed in Norris (R-C4 parity).
+    --         summarize_every_n_turns = 10,    -- nil = disabled (default)
+    --         summarize_keep_recent   = 4,
     --     },
     -- When summarize_on_evict is true, evicted turn pairs are fed to
     -- summarizer_model and the result lives on ctx.summary, appended to