Migrate panto CLI onto the public.zig surface

Move the CLI off the internal libpanto module namespaces onto the curated
public API: data-type aliases (Config family, Message/MessageRole/
effectiveSystemBlocks, Event, Pricing/PricingRegistry, the session seam,
FileSystemJSONLStore, ContentBlockType), process lifecycle (panto.init/
deinit), and ResultParts.fromText/fromTextOwned/deinit in place of the
freestanding textResult/ownedTextResult/freeResultParts.

The CLI remains on two flagged internal namespaces, panto.agent and
panto.conversation: it is a deep embedder that drives the loop below the
curated Agent/Conversation facades (system-prompt seeding through the
agent, compaction_system_prompt, the open_stream_fn test seam, standalone
Conversation values, compactAndPersist). These stay re-exported from
public.zig as a documented deep-embedder escape hatch; trimming the
transitional block removed every other internal re-export.

1 files changed, 11 insertions, 11 deletions

diff --git a/src/system_prompt.zig b/src/system_prompt.zig
index d8c06bb..500b135 100644
--- a/src/system_prompt.zig
+++ b/src/system_prompt.zig
@@ -249,7 +249,7 @@ pub fn resolveCompactionLayers(
 /// seed sequence). Returned slices borrow from `messages`.
 fn effectiveConfigWindow(
     arena: Allocator,
-    messages: []const panto.conversation.Message,
+    messages: []const panto.Message,
 ) ![]const []const u8 {
     // Find the index of the last message carrying a `replace`-mode block.
     var anchor: ?usize = null;
@@ -462,9 +462,9 @@ const TmpLayers = struct {
     }
 };
 
-fn openTmpStore(arena: Allocator, root: []const u8) !panto.session_manager.FileSystemJSONLStore {
+fn openTmpStore(arena: Allocator, root: []const u8) !panto.FileSystemJSONLStore {
     const sessions = try std.fs.path.join(arena, &.{ root, "sessions" });
-    return panto.session_manager.FileSystemJSONLStore.init(testing.allocator, testing.io, sessions, "/cwd");
+    return panto.FileSystemJSONLStore.init(testing.allocator, testing.io, sessions, "/cwd");
 }
 
 /// Minimal agent harness for system-prompt tests: a throwaway provider
@@ -472,12 +472,12 @@ fn openTmpStore(arena: Allocator, root: []const u8) !panto.session_manager.FileS
 /// store). Post-R1 the agent owns its own (empty) tool registry, so the
 /// harness only holds the config to keep the agent's borrowed pointer valid.
 const SPAgentHarness = struct {
-    config: panto.config.Config,
+    config: panto.Config,
     agent: panto.agent.Agent,
 
     fn init(
         self: *SPAgentHarness,
-        session: panto.session_store.Session,
+        session: panto.Session,
         adopted: ?panto.conversation.Conversation,
     ) void {
         self.config = .{
@@ -499,8 +499,8 @@ fn forceFlush(agent: *panto.agent.Agent) !void {
     var conv = panto.conversation.Conversation.init(testing.allocator);
     defer conv.deinit();
     try conv.addAssistantMessage(&.{});
-    const id: panto.session_store.WireIdentity = .{ .api_style = .openai_chat, .base_url = "u", .model = "m" };
-    var batch = [_]panto.session_store.PersistentMessage{
+    const id: panto.WireIdentity = .{ .api_style = .openai_chat, .base_url = "u", .model = "m" };
+    var batch = [_]panto.PersistentMessage{
         .{ .message = conv.messages.items[0], .identity = id },
     };
     try agent.session.append(&batch);
@@ -537,7 +537,7 @@ test "seedFresh then no-config-change resume is a no-op" {
 
     // The persisted conversation reflects the seeded system prompt.
     var conv_disk = (try store.load(session_id)).?;
-    const eff_disk = try panto.conversation.effectiveSystemBlocks(arena, conv_disk.messages.items);
+    const eff_disk = try panto.effectiveSystemBlocks(arena, conv_disk.messages.items);
     const seeded_count = eff_disk.items.len;
     conv_disk.deinit();
     try testing.expect(seeded_count > 0);
@@ -550,7 +550,7 @@ test "seedFresh then no-config-change resume is a no-op" {
     h2.init(sess2, conv2);
     defer h2.deinit();
     try reconcileResumeLayers(arena, testing.io, null, null, project_dir, &h2.agent);
-    const eff_after = try panto.conversation.effectiveSystemBlocks(arena, h2.agent.conversation.messages.items);
+    const eff_after = try panto.effectiveSystemBlocks(arena, h2.agent.conversation.messages.items);
     try testing.expectEqual(seeded_count, eff_after.items.len);
 }
 
@@ -593,7 +593,7 @@ test "resume after config change appends replace + append sequence" {
     try reconcileResumeLayers(arena, testing.io, null, null, project_dir, &h2.agent);
 
     // The effective prompt now reflects only the new config blocks.
-    const eff = try panto.conversation.effectiveSystemBlocks(arena, h2.agent.conversation.messages.items);
+    const eff = try panto.effectiveSystemBlocks(arena, h2.agent.conversation.messages.items);
     try testing.expectEqual(@as(usize, 2), eff.items.len);
     try testing.expectEqualStrings("new seed", eff.items[0]);
     try testing.expectEqualStrings("new append", eff.items[1]);
@@ -601,7 +601,7 @@ test "resume after config change appends replace + append sequence" {
     // A second no-op resume must not change the effective prompt (anchors
     // to the new `replace` window, not the stale original seed).
     try reconcileResumeLayers(arena, testing.io, null, null, project_dir, &h2.agent);
-    const eff2 = try panto.conversation.effectiveSystemBlocks(arena, h2.agent.conversation.messages.items);
+    const eff2 = try panto.effectiveSystemBlocks(arena, h2.agent.conversation.messages.items);
     try testing.expectEqual(@as(usize, 2), eff2.items.len);
 }