diff --git a/bin/app/data/config/modules.toml b/bin/app/data/config/modules.toml
index cbcb62a..9cd59f2 100644
--- a/bin/app/data/config/modules.toml
+++ b/bin/app/data/config/modules.toml
@@ -110,7 +110,7 @@ glyph = "Rp"
 
 [module.repair]
 repair_rate_hz = 1
-repair_amount_hp = 12
+repair_amount_hp = 9
 repair_range_m = 80
 
 # -----------------------------------------------------------------------------
diff --git a/bin/app/data/config/ships.toml b/bin/app/data/config/ships.toml
index 8349a45..6d5ec1f 100644
--- a/bin/app/data/config/ships.toml
+++ b/bin/app/data/config/ships.toml
@@ -179,7 +179,7 @@ materials = [{item = "battlecruiser_hull", amount = 1}]
 production_time_seconds = 5
 
 [ship.health]
-hp = 2200
+hp = 2400
 
 [ship.movement]
 speed_mps = 20
diff --git a/docs/content_design.md b/docs/content_design.md
index f72b8d7..2dda5a6 100644
--- a/docs/content_design.md
+++ b/docs/content_design.md
@@ -458,8 +458,8 @@ verifies it empirically. Change the anchors first, re-derive stats second.
   time) as the *prior*; per-hull HP is the empirical trim knob for
   arena results (guns are shared across many hulls, so gun changes move
   many matchups at once — hull HP moves exactly one). Current values
-  after round-4 trims: drone 60, frigate 300, destroyer 550,
-  cruiser 1500, battlecruiser 2200, battleship 6300,
+  after round-5 trims: drone 60, frigate 300, destroyer 550,
+  cruiser 1500, battlecruiser 2400, battleship 6300,
   dreadnought/carrier 24000. (The capital hulls sit well above the
   15/threat prior while their guns sit below the DPS prior — the arena
   consistently prices big ships as tanks with taxed guns.)
@@ -473,10 +473,10 @@ verifies it empirically. Change the anchors first, re-derive stats second.
 - **TTK check:** a mirror cruiser duel (51 DPS vs 2140 EHP) lasts ~42 s —
   inside the 30–60 s parity-fight band implied by the 25-ship fleet
   target. Capital mirrors run longer (~90 s), deliberately.
-- **Repair ≈ 1 HP/s per threat:** repair_tool heals 12 HP × 1 Hz at 13
-  threat (arena round 1: at 2 HP/s-per-threat the escorted team won
-  flawlessly — in-combat sustain effectively removes enemy DPS and must
-  be priced like DPS, not like HP). Salvager: collection range 60 (was
+- **Repair ≈ 0.7 HP/s per threat:** repair_tool heals 9 HP × 1 Hz at 13
+  threat (nerfed 25 → 12 → 9: in-combat sustain effectively removes
+  enemy DPS and must be priced like DPS, not like HP — the escorted
+  team held a persistent +24% at 12). Salvager: collection range 60 (was
   a nonsensical 500, beyond any sensor), cargo 20, 0.5 collections/s.
   `scrap_despawn_seconds` raised 30 → 120: a capital kill drops
   hundreds of scrap collected one per cycle, so 30 s despawned nearly
@@ -517,6 +517,21 @@ DPS (17→14, 70→52 damage), armor 640→1000, repair 25→12, station range
 still win flawlessly in round 2, the range ladder (kiting) is the next
 suspect, ahead of further DPS cuts.
 
+**Arena round 5 results (2026-07-04, with fight durations) — combat
+pass converged:** durations validate the TTK anchor: drone mirror
+22.7 s, cruiser mirror 71.2 s, battleship mirror 94.6 s, most fights
+in the 22–72 s band; the destroyers-vs-dreadnought slugfest is the
+outlier at 214 s (extreme tank vs. chip damage — acceptable for the
+extreme case). Converged: mirrors 5–10%, swarm vs cruisers +15%,
+frigates vs battleship dropped to +13% on its own (confirming the
+noise-floor read — now inside band anyway), dreadnought at +3% knife
+edge, glass vs armored +10%, two-to-one 78%, station assault stable at
+44%. Two two-round signals actioned in round 6: mixed beat
+battlecruisers again (+20%, +18%) → battlecruiser hull 2200→2400;
+repair escort held +24% twice with all frigates surviving →
+repair_amount 12→9. Everything else is frozen; further refinement
+moves to real-game playtests.
+
 **Arena round 4 results (2026-07-04) and convergence policy:** mirrors
 at 0–3%; swarm vs cruisers +7%; glass vs armored resolved at +3% for
 armored (armor 1200 confirmed after four rounds of signal). Noise
diff --git a/docs/progression_design.md b/docs/progression_design.md
index e6f755d..6e9fb17 100644
--- a/docs/progression_design.md
+++ b/docs/progression_design.md
@@ -373,9 +373,3 @@ in `requirements.md` and the git history). Still open:
    one matching deposit tile). Touches REQ-BLD-MINER ("every asteroid
    tile is equivalent" no longer holds), REQ-GW-ASTEROID-EXPAND /
    REQ-EXP-*, `world.toml`, and `visuals.toml`.
-6. **Verify the balancing arena end condition.** Arena round 1's
-   station-assault log showed the arena "(running)" with every ship on
-   both sides destroyed — per REQ-BAL-SIM-END the station-less team
-   should have lost the moment its last ship died. Round 2 ended
-   correctly, so it may only be a log-snapshot artifact; confirm, and
-   fix the end condition if it can genuinely idle in that state.