fix: 360 omni marking now enumerates smart-tag registry instead of physics sweep

linear_sphere_sweep returns only a capped hit table (no count) and its
slots flood with world-geometry actors, starving real enemies behind the
player (crash: nil num_hits compare; then silent no-marks). Candidates
now come from smart_tag_system._unit_extension_data (alive, breed-typed,
in range) — geometry can't interfere, LOS gates still apply unless
omni_mark_ignore_los. OMNI-DIAG candidate/reject logging kept, gated on
debug_mode.

AutoMark/scripts/mods/AutoMark/targeting/custom_targeting.lua

@@ -60,7 +60,12 @@ local AIM_CHECK_FILTER                     = "filter_player_ping_target_selectio
 local AIM_CHECK_MAX_HITS                   = 64
 local AIM_CHECK_MIN_RADIUS                 = 1
 local AIM_CHECK_RADIUS_PER_METER           = 0.052
-local OMNI_MAX_HITS                        = 128
+local omni_rejects                         = nil
+local function omni_reject(reason)
+    if omni_rejects then
+        omni_rejects[reason] = (omni_rejects[reason] or 0) + 1
+    end
+end
 
 -- Params
 local visibility_raycast_object            = nil
@@ -581,11 +586,50 @@ function mod:find_auto_mark_target_unit(min_range, max_range, tag_name, tag_cont
 
     -- hit unit list: forward raycast, or full-sphere sweep when omni mark is enabled
     local omni_mark = mod_settings.omni_mark
+    if mod_settings.debug_mode and not mod.omni_diag_settings_logged then
+        mod.omni_diag_settings_logged = true
+        mod:info(string.format("OMNI-DIAG settings: omni_mark=%s ignore_los=%s debug=%s", tostring(omni_mark), tostring(mod_settings.omni_mark_ignore_los), tostring(mod_settings.debug_mode)))
+    end
     local ray_origin, forward, right, up = smart_targeting_extension:_targeting_parameters()
-    local hits, num_hits, hits_use_actor
+    local hits, num_hits, hits_are_units
     if omni_mark then
-        hits, num_hits = PhysicsWorld_linear_sphere_sweep(smart_targeting_extension._physics_world, ray_origin, ray_origin + forward * max_range, max_range, OMNI_MAX_HITS, "types", "both", "collision_filter", COLLISION_FILTER, "report_initial_overlap", true)
+        -- enumerate smart-taggable units directly; physics sphere sweeps get swamped by world geometry actors
-        hits_use_actor = true
+        hits = {}
+        num_hits = 0
+        local unit_extension_data = smart_tag_system._unit_extension_data
+        local max_range_squared = max_range * max_range
+        if unit_extension_data then
+            for unit, smart_tag_extension in pairs(unit_extension_data) do
+                if HEALTH_ALIVE[unit] and smart_tag_extension._target_type == "breed" then
+                    local position = Unit_world_position(unit, 1)
+                    if Vector3_distance_squared(position, ray_origin) <= max_range_squared then
+                        num_hits = num_hits + 1
+                        hits[num_hits] = { unit = unit, position = position }
+                    end
+                end
+            end
+        end
+        hits_are_units = true
+        omni_diag_counter = (omni_diag_counter or 0) + 1
+        omni_rejects = mod_settings.debug_mode and omni_diag_counter % 10 == 1 and {} or nil
+        if omni_rejects then
+            local counts, ordered_names = {}, {}
+            for i = 1, num_hits do
+                local unit_data_extension = ScriptUnit_extension(hits[i].unit, "unit_data_system")
+                local breed = unit_data_extension and unit_data_extension._breed
+                local key = breed and breed.name or "?"
+                if counts[key] == nil then
+                    counts[key] = 0
+                    ordered_names[#ordered_names + 1] = key
+                end
+                counts[key] = counts[key] + 1
+            end
+            local name_parts = {}
+            for _, n in ipairs(ordered_names) do
+                name_parts[#name_parts + 1] = n .. "x" .. counts[n]
+            end
+            mod:info(string.format("OMNI-DIAG candidates=%d breeds=[%s]", num_hits, table.concat(name_parts, ",")))
+        end
     else
         hits, num_hits = PhysicsWorld_raycast(smart_targeting_extension._physics_world, ray_origin, forward, max_range, "all", "collision_filter", COLLISION_FILTER)
     end
@@ -650,14 +694,21 @@ function mod:find_auto_mark_target_unit(min_range, max_range, tag_name, tag_cont
 
     for i = 1, num_hits do
         local hit = hits[i]
-        local hit_actor = hits_use_actor and hit.actor or hit[INDEX_ACTOR]
+        local hit_unit, hit_unit_center_pos
-        if not hit_actor then
+        if hits_are_units then
-            goto continue
+            hit_unit = hit.unit
+            hit_unit_center_pos = hit.position
+        else
+            local hit_actor = hit[INDEX_ACTOR]
+            if not hit_actor then
+                omni_reject("no_actor")
+                goto continue
+            end
+            hit_unit = Actor_unit(hit_actor)
         end
-
-        local hit_unit = Actor_unit(hit_actor)
         -- ignore player unit, already marked unit and dead unit
         if hit_unit == player_unit or hit_unit == marked_unit or canceled_units[hit_unit] or not HEALTH_ALIVE[hit_unit] then
+            omni_reject("skip_player_dead")
             goto continue
         end
 
@@ -665,11 +716,13 @@ function mod:find_auto_mark_target_unit(min_range, max_range, tag_name, tag_cont
         local hit_unit_breed_data = hit_unit_data_extension and hit_unit_data_extension._breed
         -- ignore untaggable unit
         if not hit_unit_breed_data or hit_unit_breed_data.smart_tag_target_type ~= "breed" or hit_unit_breed_data.faction_name == "imperium" or hit_unit_breed_data.unit_template_name ~= "minion" then
+            omni_reject("untaggable")
             goto continue
         end
 
         local hit_unit_breed_name = hit_unit_breed_data.name
         if best_unit_is_sticky_targeting and hit_unit_breed_name ~= "renegade_netgunner" then
+            omni_reject("sticky1")
             goto continue
         end
 
@@ -684,12 +737,14 @@ function mod:find_auto_mark_target_unit(min_range, max_range, tag_name, tag_cont
                 or IGNORE_EXECUTION_ORDER_FORCE_MARK_BREED_NAMES[hit_unit_breed_name]
                 or hit_unit_is_dormant_daemonhost
             then
+                omni_reject("priority_or_group")
                 goto continue
             end
         end
 
         local hit_unit_is_attacking_player = hit_unit_attacking_unit_id == player_unit_id
         if best_unit_is_sticky_targeting and not hit_unit_is_attacking_player then
+            omni_reject("sticky2")
             goto continue
         end
 
@@ -706,43 +761,53 @@ function mod:find_auto_mark_target_unit(min_range, max_range, tag_name, tag_cont
         end
 
         if hit_unit_score < best_unit_score then
+            omni_reject("lower_score")
             goto continue
         end
 
-        local hit_unit_center_pos = Actor_world_bounds(hit_actor)
+        if not hit_unit_center_pos then
+            hit_unit_center_pos = Actor_world_bounds(hit[INDEX_ACTOR])
+        end
         local to_hit_unit_center = hit_unit_center_pos - ray_origin
         local distance = Vector3_length(to_hit_unit_center)
         -- filter unit by range
         if distance < min_range or distance > max_range then
+            omni_reject("out_of_range")
             goto continue
         end
 
         -- prefer the closer unit on score ties (hit order is arbitrary for the omni sweep)
         if hit_unit_score == best_unit_score and distance >= best_unit_distance then
+            omni_reject("tie_distance")
             goto continue
         end
 
         local hit_unit_tag = smart_tag_system:unit_tag(hit_unit)
         if tag_name == TAG_NAMES.ENEMY_TAG then
             if hit_unit_tag then
+                omni_reject("already_tagged")
                 goto continue
             end
         elseif tag_name == TAG_NAMES.VETERAN_TAG then
             if hit_unit_is_dormant_daemonhost then
                 if hit_unit_tag then
+                    omni_reject("vet_tagged")
                     goto continue
                 end
             else
                 if not is_focus_target_tag_target_valid(hit_unit, hit_unit_tag, hit_unit_breed_name, hit_unit_attacking_unit_id, removed_units) then
+                    omni_reject("vet_invalid")
                     goto continue
                 end
             end
         elseif tag_name == TAG_NAMES.COMPANION_TAG then
             if not is_cyber_mastiff_tag_target_valid(hit_unit, hit_unit_tag, hit_unit_breed_name, hit_unit_breed_data, hit_unit_attacking_unit_id, game_session, removed_units, distance, companion_position, hit_unit_center_pos) then
+                omni_reject("companion_invalid")
                 goto continue
             end
         elseif tag_name == TAG_NAMES.SERVO_SKULL_TAG then
             if not is_servo_skull_tag_target_valid(hit_unit, hit_unit_tag, hit_unit_breed_name, hit_unit_breed_data, hit_unit_attacking_unit_id, game_session, removed_units, companion_position, hit_unit_center_pos, max_ability_charges, remaining_capacitance) then
+                omni_reject("skull_invalid")
                 goto continue
             end
         end
@@ -761,6 +826,7 @@ function mod:find_auto_mark_target_unit(min_range, max_range, tag_name, tag_cont
         end
 
         if not visible then
+            omni_reject("not_visible")
             goto continue
         end
 
@@ -777,6 +843,16 @@ function mod:find_auto_mark_target_unit(min_range, max_range, tag_name, tag_cont
         ::continue::
     end
 
+    if omni_rejects then
+        local parts = {}
+        for k, v in pairs(omni_rejects) do
+            parts[#parts + 1] = k .. "=" .. v
+        end
+        table.sort(parts)
+        mod:info(string.format("OMNI-DIAG pass[%s] best=%s rejects=[%s]", tostring(tag_name), tostring(best_unit_breed_name), table.concat(parts, ",")))
+        omni_rejects = nil
+    end
+
     if best_unit ~= marked_unit then
         return best_unit, best_unit_tag, best_unit_is_dormant_daemonhost
     end