diff --git a/README.md b/README.md
index 561fba4..a9d2c61 100644
--- a/README.md
+++ b/README.md
@@ -35,21 +35,27 @@ session/
 ├── new                 create a session by writing key=value arguments
 ├── idx                 tab-separated session index
 └── {session}/
-    ├── plan            persistent Markdown checklist
+    ├── goal            session goal text (triggers workflow on write)
+    ├── goalstatus      goal status (running/complete/blocked)
+    ├── goalwait        blocks until goal status changes
     ├── env             session environment
-    └── agent/{agent}/
-        ├── cfg         configuration
-        ├── ctl         control commands
-        ├── state       current state
-        ├── statewait   block until state changes
-        ├── prompt      submit a prompt
-        ├── chat        conversation history
-        ├── context     rendered model context
-        ├── systemprompt rendered system prompt
-        ├── tools       tool discovery and loading
-        ├── usage       token statistics
-        ├── cost        cost estimate
-        └── proc/       detached process output
+    └── agent/
+        ├── new         create agent by writing key=value
+        ├── idx         tab-separated agent index
+        └── {agent}/
+            ├── plan        persistent Markdown checklist
+            ├── cfg         configuration
+            ├── ctl         control commands
+            ├── state       current state
+            ├── statewait   block until state changes
+            ├── prompt      submit a prompt
+            ├── chat        conversation history
+            ├── context     rendered model context
+            ├── systemprompt rendered system prompt
+            ├── tools       tool discovery and loading
+            ├── usage       token statistics
+            ├── cost        cost estimate
+            └── proc/       detached process output
 ```
 
 ## Providers, tools, and security
diff --git a/doc/architecture-9p.md b/doc/architecture-9p.md
index 275b625..7ef2513 100644
--- a/doc/architecture-9p.md
+++ b/doc/architecture-9p.md
@@ -56,9 +56,12 @@ echo '{"prompt":"explain recursion"}' | ollie-9p rdwr generate
 | Path | Mode | Purpose |
 |---|---:|---|
 | `session/new` | rdwr | Create a session. Write `name=X [remote=Y]`; read the resulting name. |
-| `session/idx` | r | Session index. |
+| `session/idx` | r | Session index: `session-id\tsession-name\tpaused\tconnected\tremote\tcwd`. |
 | `session/{sname}/env` | r | Session environment and runtime variables. |
 | `session/{sname}/paused` | r | Pause state. |
+| `session/{sname}/goal` | r/w | Session goal text. Writing triggers the workflow if not running. |
+| `session/{sname}/goalstatus` | r/w | Goal status: running, complete, blocked, or error. |
+| `session/{sname}/goalwait` | r | Blocks until goal status changes. |
 | `session/{sname}/ctl` | rdwr | `kill`, `save`, `invalidate`, `pause`, and `resume`. |
 | `session/{sname}/name` | r/w | Mutable session display name. |
 | `session/{sname}/id` | r | Immutable session UUID. |
@@ -75,8 +78,8 @@ echo "name=coding cwd=$PWD" | ollie-9p write session/myproj/agent/new
 
 | Path | Mode | Purpose |
 |---|---:|---|
-| `agent/new` | rdwr | Create an agent from `name=X cwd=Y`. |
-| `agent/idx` | r | Agent index. |
+| `agent/new` | rdwr | Create an agent from `name=X cwd=Y`. With `prompt=`, runs as sub-agent. |
+| `agent/idx` | r | Agent index: `session-id\tagent-id\tagent-name\tparent-id\tdepth\tstate`. |
 | `agent/{aname}/prompt` | w | Queue a user turn. |
 | `agent/{aname}/fifo` | r/w | Prompt queue. |
 | `agent/{aname}/feed` | r/w | Change-detecting input stream. |
diff --git a/doc/evolution.md b/doc/evolution.md
index f15bee7..0dd85b7 100644
--- a/doc/evolution.md
+++ b/doc/evolution.md
@@ -59,6 +59,8 @@ gantt
     Go file tools + cleanup        :done, 2026-08-16, 1d
     OptMem persistent memory       :done, 2026-08-16, 1d
     Markdown parsing + output cap  :done, 2026-08-16, 1d
+    Goals + conductor workflow     :done, 2026-08-17, 1d
+    Split session/agent indexes    :done, 2026-08-17, 1d
 ```
 ## Phase 1: Monorepo Bootstrap (Apr 11)
 Started as independent git repos unified under a monorepo with submodules.
@@ -1745,4 +1747,61 @@ or external workflow. The client supplies context and writes a prompt; Ollie
 supplies the runtime and 9P state surface. `virtfs` separates namespace
 declaration from 9P transport. Tool authoring, remote execution, prompting, and
 editor integration remain separate concerns documented by the focused
-architecture documents.
\ No newline at end of file
+architecture documents.
+
+## Phase 26: Goals, Workflows, and Index Split (Aug 17)
+
+Session-level goals and the conductor workflow pattern became first-class features.
+The session and agent index formats were split for cleaner parsing and better
+sub-agent tree support in the GUI.
+
+### Goals and Workflows
+
+Sessions gained goal-related files:
+- `session/{s}/goal` — write goal text to trigger a workflow
+- `session/{s}/goalstatus` — read/write status (running/complete/blocked)
+- `session/{s}/goalwait` — block until status changes
+
+Writing to `goal` triggers `runWorkflow()` if status is empty, complete, blocked,
+or error. The workflow script (default: `conductor`) creates a conductor agent
+that reads the goal, explores the codebase, breaks work into tasks, and delegates
+to sub-agents via `subagent_spawn`.
+
+The conductor agent profile includes code intelligence tools (`code_outline`,
+`code_symbols`, `code_query`, `codebase_overview`) and LSP tools (`lsp_definition`,
+`lsp_references`, etc.) for understanding the codebase before delegating.
+
+### Index Format Split
+
+The single `session/idx` line that crammed session and agent data together was
+split into two files:
+
+**`session/idx`** — session list only:
+```
+session-id\tsession-name\tpaused\tconnected\tremote\tcwd
+```
+
+**`session/{s}/agent/idx`** — agent tree per session:
+```
+session-id\tagent-id\tagent-name\tparent-id\tdepth\tstate
+```
+
+This enabled:
+- Simpler GUI parsing with no embedded semicolon-separated agent lists
+- Proper sub-agent tree display with parent-id and depth
+- Expandable/collapsible agent hierarchy in the session tree
+- Auto-selection of top-level agents (depth 0) instead of first-in-list
+
+### GUI Sub-Agent Tree
+
+The KDE GUI's `SessionModel` gained:
+- `hasChildren` role for agents with sub-agents
+- `m_agentExpanded` map for tracking agent expansion state
+- Recursive `appendAgentTree` that respects parent expansion
+- Expand/collapse arrows for agents with children
+
+### Bug Fix: ollie-9p UNAME Fallback
+
+`ollie-9p` previously required `$OLLIE_UNAME` when `$OLLIE_SESSION_ID` was set,
+making it unusable from non-agent contexts. The fallback to `$USER` was added,
+allowing normal users to read session files like `goal` and `goalstatus`.
\ No newline at end of file