**How default compaction works:**

When context exceeds the threshold, pi finds a "cut point" that keeps recent turns (configurable via `settings.json` `compaction.keepRecentTokens`, default 20k):

```
Legend:
  hdr  = header           usr  = user message       ass = assistant message
  tool = tool result      cmp  = compaction entry   bash = bashExecution
```

```
Session entries (before compaction):

  index:   0     1     2     3      4     5     6      7      8     9     10
        ┌─────┬─────┬─────┬─────┬──────┬─────┬─────┬──────┬──────┬─────┬──────┐
        │ hdr │ cmp │ usr │ ass │ tool │ usr │ ass │ tool │ tool │ ass │ tool │
        └─────┴─────┴─────┴─────┴──────┴─────┴─────┴──────┴──────┴─────┴──────┘
                ↑     └───────┬───────┘ └────────────┬────────────┘
         previousSummary  messagesToSummarize     messagesToKeep
                                   ↑
                    cutPoint.firstKeptEntryIndex = 5

After compaction (new entry appended):

  index:   0     1     2     3      4     5     6      7      8     9     10    11
        ┌─────┬─────┬─────┬─────┬──────┬─────┬─────┬──────┬──────┬─────┬──────┬─────┐
        │ hdr │ cmp │ usr │ ass │ tool │ usr │ ass │ tool │ tool │ ass │ tool │ cmp │
        └─────┴─────┴─────┴─────┴──────┴─────┴─────┴──────┴──────┴─────┴──────┴─────┘
                      └───────┬───────┘ └──────────────┬──────────────┘       ↑
                          ignored                   loaded           firstKeptEntryIndex = 5
                        on reload                 on reload          (stored in new cmp)
```

The session file is append-only. When loading, the session loader finds the latest compaction entry, uses its summary, then loads messages starting from `firstKeptEntryIndex`. The cut point is always a user, assistant, or bashExecution message (never a tool result, which must stay with its tool call).

```
What gets sent to the LLM as context:

                       5     6      7      8     9     10
  ┌────────┬─────────┬─────┬─────┬──────┬──────┬─────┬──────┐
  │ system │ summary │ usr │ ass │ tool │ tool │ ass │ tool │
  └────────┴─────────┴─────┴─────┴──────┴──────┴─────┴──────┘
                 ↑      └──────────────┬──────────────┘
       from new cmp's        messages from
           summary       firstKeptEntryIndex onwards
```

**Split turns:** When a single turn is too large, the cut point may land mid-turn at an assistant message. In this case `cutPoint.isSplitTurn = true`:

```
Split turn example (one huge turn that exceeds keepRecentTokens):

  index:   0     1     2      3     4      5      6     7      8     9
        ┌─────┬─────┬─────┬──────┬─────┬──────┬──────┬─────┬──────┬─────┐
        │ hdr │ usr │ ass │ tool │ ass │ tool │ tool │ ass │ tool │ ass │
        └─────┴─────┴─────┴──────┴─────┴──────┴──────┴─────┴──────┴─────┘
                ↑                                       ↑
         turnStartIndex = 1                   firstKeptEntryIndex = 7
                │                                       │ (must be usr/ass/bash, not tool)
                └─────────── turn prefix ───────────────┘ (idx 1-6, summarized separately)
                                                        └── kept messages (idx 7-9)

  messagesToSummarize = []  (no complete turns before this one)
  messagesToKeep = [ass idx 7, tool idx 8, ass idx 9]

The default compaction generates TWO summaries that get merged:
1. History summary (previousSummary + messagesToSummarize)
2. Turn prefix summary (messages from turnStartIndex to firstKeptEntryIndex)
```

See [src/core/compaction.ts](../src/core/compaction.ts) for the full implementation.

**Event fields:**

| Field | Description |
|-------|-------------|
| `entries` | All session entries (header, messages, model changes, previous compactions). Use this for custom schemes that need full session history. |
| `cutPoint` | Where default compaction would cut. `firstKeptEntryIndex` is the entry index where kept messages start. `isSplitTurn` indicates if cutting mid-turn. |
| `previousSummary` | Summary from the last compaction, if any. Include this in your summary to preserve accumulated context. |
| `messagesToSummarize` | Messages that will be summarized and discarded (from after last compaction to cut point). |
| `messagesToKeep` | Messages that will be kept verbatim after the summary (from cut point to end). |
| `tokensBefore` | Current context token count (why compaction triggered). |
| `model` | Model to use for summarization. |
| `resolveApiKey` | Function to resolve API key for any model: `await resolveApiKey(model)` |
| `customInstructions` | Optional focus for summary (from `/compact <instructions>`). |

**Common patterns:**

[668 more lines in file. Use offset=273 to continue]


I see you fixed the diagrams. They look correct now. Is there anything else that needs fixing, or should I commit these changes?


ignored on reload, what does this mean practically? we still get all session entries, right? ignored only matters for what's passed to the llm, no?


You're right. "Ignored on reload" is misleading. The entries are still there in the session file and available in `entries`. "Ignored" only means they're not included in the messages sent to the LLM. Let me fix that:

edit

                      └───────┬───────┘ └──────────────┬──────────────┘       ↑
                          ignored                   loaded           firstKeptEntryIndex = 5
                        on reload                 on reload          (stored in new cmp)

                      └───────┬───────┘ └──────────────┬──────────────┘       ↑
                       not sent to LLM            sent to LLM        firstKeptEntryIndex = 5
                                                                     (stored in new cmp)


Successfully replaced text in /Users/badlogic/workspaces/pi-mono/packages/coding-agent/docs/hooks.md. Changed 261 characters to 261 characters.

     ...
 210         ┌─────┬─────┬─────┬─────┬──────┬─────┬─────┬──────┬──────┬─────┬──────┬─────┐
 211         │ hdr │ cmp │ usr │ ass │ tool │ usr │ ass │ tool │ tool │ ass │ tool │ cmp │
 212         └─────┴─────┴─────┴─────┴──────┴─────┴─────┴──────┴──────┴─────┴──────┴─────┘
 213                       └───────┬───────┘ └──────────────┬──────────────┘       ↑
-214                           ignored                   loaded           firstKeptEntryIndex = 5
-215                         on reload                 on reload          (stored in new cmp)
+214                        not sent to LLM            sent to LLM        firstKeptEntryIndex = 5
+215                                                                      (stored in new cmp)
 216 ```
 217
 218 The session file is append-only. When loading, the session loader finds the latest compaction entry, uses its summary, then loads messages starting from `firstKeptEntryIndex`. The cut point is always a user, assistant, or bashExecution message (never a tool result, which must stay with its tool call).
 219
     ...


bash

cd /Users/badlogic/workspaces/pi-mono && npm run check 2>&1


> pi-monorepo@0.0.3 check
> biome check --write . && npm run check --workspaces --if-present && tsgo --noEmit

Checked 286 files in 157ms. No fixes applied.

> @mariozechner/pi-agent-core@0.27.5 check
> tsgo --noEmit

> @mariozechner/pi-ai@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 44 files in 41ms. No fixes applied.

> @mariozechner/pi-coding-agent@0.27.5 check
> tsgo --noEmit && tsgo -p tsconfig.examples.json

> @mariozechner/pi-mom@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 16 files in 16ms. No fixes applied.

> @mariozechner/pi@0.27.5 check
> biome check --write .

Checked 10 files in 17ms. No fixes applied.

> @mariozechner/pi-proxy@0.27.5 check
> biome check --write .

Checked 3 files in 3ms. No fixes applied.

> @mariozechner/pi-tui@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 27 files in 25ms. No fixes applied.

> @mariozechner/pi-web-ui@0.27.5 check
> tsgo --noEmit && cd example && tsgo --noEmit

> pi-web-ui-example@1.15.5 check
> tsgo --noEmit


Fixed. Now it says "not sent to LLM" and "sent to LLM" which is more accurate. All entries are still in the session file and available via `entries`.


so, how do we get just the messages from firstKeptEntryIndex from session manager?


Looking at the session manager code:

cd /Users/badlogic/workspaces/pi-mono && grep -n "firstKeptEntryIndex\|loadEntries\|loadSession" packages/coding-agent/src/core/session-manager.ts | head -30


46:	firstKeptEntryIndex: number;
115:export function loadSessionFromEntries(entries: SessionEntry[]): LoadedSession {
150:	for (let i = compactionEvent.firstKeptEntryIndex; i < entries.length; i++) {
173:function loadEntriesFromFile(filePath: string): SessionEntry[] {
237:			this.inMemoryEntries = loadEntriesFromFile(this.sessionFile);
338:	loadSession(): LoadedSession {
339:		const entries = this.loadEntries();
340:		return loadSessionFromEntries(entries);
344:		return this.loadSession().messages;
348:		return this.loadSession().thinkingLevel;
352:		return this.loadSession().model;
355:	loadEntries(): SessionEntry[] {
359:			return loadEntriesFromFile(this.sessionFile);
403:		const entries = loadEntriesFromFile(path);


export function loadSessionFromEntries(entries: SessionEntry[]): LoadedSession {
	let thinkingLevel = "off";
	let model: { provider: string; modelId: string } | null = null;

	for (const entry of entries) {
		if (entry.type === "thinking_level_change") {
			thinkingLevel = entry.thinkingLevel;
		} else if (entry.type === "model_change") {
			model = { provider: entry.provider, modelId: entry.modelId };
		} else if (entry.type === "message" && entry.message.role === "assistant") {
			model = { provider: entry.message.provider, modelId: entry.message.model };
		}
	}

	let latestCompactionIndex = -1;
	for (let i = entries.length - 1; i >= 0; i--) {
		if (entries[i].type === "compaction") {
			latestCompactionIndex = i;
			break;
		}
	}

	if (latestCompactionIndex === -1) {
		const messages: AppMessage[] = [];
		for (const entry of entries) {
			if (entry.type === "message") {
				messages.push(entry.message);
			}
		}
		return { messages, thinkingLevel, model };
	}

	const compactionEvent = entries[latestCompactionIndex] as CompactionEntry;

	const keptMessages: AppMessage[] = [];
	for (let i = compactionEvent.firstKeptEntryIndex; i < entries.length; i++) {
		const entry = entries[i];
		if (entry.type === "message") {
			keptMessages.push(entry.message);
		}
	}

	const messages: AppMessage[] = [];
	messages.push(createSummaryMessage(compactionEvent.summary));
	messages.push(...keptMessages);

	return { messages, thinkingLevel, model };
}

function getSessionDirectory(cwd: string, agentDir: string): string {

[336 more lines in file. Use offset=165 to continue]


I see. `loadSessionFromEntries` already handles this. It finds the latest compaction, then loads messages from `firstKeptEntryIndex` onwards and prepends the summary message.

So from the hook's perspective, if you have `entries`, you'd do something similar:

```typescript
// Find latest compaction
let latestCompactionIndex = -1;
for (let i = entries.length - 1; i >= 0; i--) {
  if (entries[i].type === "compaction") {
    latestCompactionIndex = i;
    break;
  }
}

// Get messages from firstKeptEntryIndex
if (latestCompactionIndex >= 0) {
  const compaction = entries[latestCompactionIndex];
  const keptMessages = [];
  for (let i = compaction.firstKeptEntryIndex; i < entries.length; i++) {
    if (entries[i].type === "message") {
      keptMessages.push(entries[i].message);
    }
  }
}
```

But the hook already gets `messagesToKeep` which is exactly this. Should I add a note in the docs clarifying that `messagesToKeep` is the messages from `firstKeptEntryIndex` onwards, or were you asking about something else?


loadSessionFromEntries is kind of a bad name for this no? alternatives?


Yeah, it does more than just "load" - it reconstructs the working context from entries. Some alternatives:

- `buildSessionContext` - emphasizes it's building what the LLM sees
- `reconstructSession` - implies piecing together from entries
- `resolveSession` - resolving entries to usable messages
- `getSessionState` - getting current state from entries
- `sessionFromEntries` - simpler, but still vague
- `buildMessagesFromEntries` - more accurate about what it returns
- `rehydrateSession` - common term for reconstructing state

I think `buildSessionContext` or `reconstructSession` are the clearest about what it actually does: taking raw entries and building the context that will be used.


i wonder why that's not a method on SessionManager


Good point. `SessionManager` already has `loadSession()` which calls `loadSessionFromEntries(this.loadEntries())`. The standalone function exists probably because it's also used elsewhere with arbitrary entries (like when loading from a different file path).

Looking at usage:

cd /Users/badlogic/workspaces/pi-mono && grep -rn "loadSessionFromEntries" packages/coding-agent/src/


packages/coding-agent/src/core/session-manager.ts:115:export function loadSessionFromEntries(entries: SessionEntry[]): LoadedSession {
packages/coding-agent/src/core/session-manager.ts:340:		return loadSessionFromEntries(entries);
packages/coding-agent/src/core/agent-session.ts:27:import { type CompactionEntry, loadSessionFromEntries, type SessionManager } from "./session-manager.js";
packages/coding-agent/src/core/agent-session.ts:815:			const loaded = loadSessionFromEntries(newEntries);
packages/coding-agent/src/core/agent-session.ts:977:			const loaded = loadSessionFromEntries(newEntries);
packages/coding-agent/src/core/agent-session.ts:1310:		const loaded = loadSessionFromEntries(entries);
packages/coding-agent/src/core/agent-session.ts:1398:		const loaded = loadSessionFromEntries(newEntries);
packages/coding-agent/src/index.ts:126:	loadSessionFromEntries,


It's used in `agent-session.ts` after compaction to reload messages. All usages are with entries that came from a SessionManager. Could be a method like `sessionManager.buildContext(entries)` or just have `sessionManager.loadSession()` be the only way to do it.

But this is probably a bigger refactor than needed right now. Want to file an issue for it or leave it?


so session manager has loadEntries to get ALL entries, and loadSession to do the compaction dance, right?


Yes, exactly:

- `loadEntries()` - returns all raw `SessionEntry[]` from the file (header, messages, compactions, model changes, everything)
- `loadSession()` - calls `loadEntries()` then `loadSessionFromEntries()` to return `LoadedSession` with just the messages the LLM should see (summary + kept messages after compaction)

So if you want the full history, use `loadEntries()`. If you want what gets sent to the LLM, use `loadSession()`.


don't we load all entries on session manager construction?


cd /Users/badlogic/workspaces/pi-mono && grep -n "constructor\|inMemoryEntries\|loadEntries" packages/coding-agent/src/core/session-manager.ts | head -30


173:function loadEntriesFromFile(filePath: string): SessionEntry[] {
216:	private inMemoryEntries: SessionEntry[] = [];
218:	private constructor(cwd: string, agentDir: string, sessionFile: string | null, persist: boolean) {
237:			this.inMemoryEntries = loadEntriesFromFile(this.sessionFile);
238:			const header = this.inMemoryEntries.find((e) => e.type === "session");
243:			this.inMemoryEntries = [];
251:			this.inMemoryEntries.push(entry);
276:		this.inMemoryEntries = [
289:		const hasAssistant = this.inMemoryEntries.some((e) => e.type === "message" && e.message.role === "assistant");
293:			for (const e of this.inMemoryEntries) {
308:		this.inMemoryEntries.push(entry);
318:		this.inMemoryEntries.push(entry);
329:		this.inMemoryEntries.push(entry);
334:		this.inMemoryEntries.push(entry);
339:		const entries = this.loadEntries();
355:	loadEntries(): SessionEntry[] {
356:		if (this.inMemoryEntries.length > 0) {
357:			return [...this.inMemoryEntries];
359:			return loadEntriesFromFile(this.sessionFile);
390:		this.inMemoryEntries = newEntries;
403:		const entries = loadEntriesFromFile(path);


Yes, on construction it loads entries into `inMemoryEntries` (line 237). Then `loadEntries()` returns a copy of `inMemoryEntries` if it has entries, otherwise reads from file (line 355-359).

So it's cached in memory. `loadEntries()` just returns a defensive copy of the cached array.


that's all super confusing, i don't think we need loadEntries, do we?


Looking at it, `loadEntries()` is just a getter for `inMemoryEntries` with a defensive copy. The usages:

cd /Users/badlogic/workspaces/pi-mono && grep -rn "\.loadEntries()" packages/coding-agent/src/


packages/coding-agent/src/core/session-manager.ts:339:		const entries = this.loadEntries();
packages/coding-agent/src/core/agent-session.ts:513:		const entries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:751:			const entries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:814:			const newEntries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:912:			const entries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:976:			const newEntries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:1284:		const oldEntries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:1309:		const entries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:1360:		const entries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:1397:		const newEntries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:1427:		const entries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:1573:			entries: this.sessionManager.loadEntries(),
packages/coding-agent/src/modes/print-mode.ts:31:	const entries = session.sessionManager.loadEntries();
packages/coding-agent/src/modes/interactive/interactive-mode.ts:354:		const entries = this.session.sessionManager.loadEntries();
packages/coding-agent/src/modes/interactive/interactive-mode.ts:1070:		const compactionEntry = getLatestCompactionEntry(this.sessionManager.loadEntries());
packages/coding-agent/src/modes/interactive/interactive-mode.ts:1140:		const entries = this.sessionManager.loadEntries();
packages/coding-agent/src/modes/interactive/interactive-mode.ts:1188:			const entries = this.sessionManager.loadEntries();
packages/coding-agent/src/modes/interactive/interactive-mode.ts:1927:		const entries = this.sessionManager.loadEntries();
packages/coding-agent/src/modes/rpc/rpc-mode.ts:124:	const entries = session.sessionManager.loadEntries();


Could just be a getter `get entries(): SessionEntry[]` that returns a copy. Or even just expose `inMemoryEntries` as a readonly property.

But this is a refactor rabbit hole. Want to file an issue for cleaning up SessionManager API and stay focused on the docs for now?


i think we should renamte loadSessionFromEntries to buildSessionContext and document that function. then in sessionmanager, we should have getEntries() and buildSessionContext(). check if a defensive copy is actually needed for the call sites of loadEntries() which will become getEntries() without file loading, as we now know that we load on construction


cd /Users/badlogic/workspaces/pi-mono && grep -B2 -A10 "\.loadEntries()" packages/coding-agent/src/core/agent-session.ts | head -80


	async reset(): Promise<boolean> {
		const previousSessionFile = this.sessionFile;
		const entries = this.sessionManager.loadEntries();

		// Emit before_clear event (can be cancelled)
		if (this._hookRunner?.hasHandlers("session")) {
			const result = (await this._hookRunner.emit({
				type: "session",
				entries,
				sessionFile: this.sessionFile,
				previousSessionFile: null,
				reason: "before_clear",
			})) as SessionEventResult | undefined;
--
			}

			const entries = this.sessionManager.loadEntries();
			const settings = this.settingsManager.getCompactionSettings();

			const preparation = prepareCompaction(entries, settings);
			if (!preparation) {
				throw new Error("Already compacted");
			}

			// Find previous compaction summary if any
			let previousSummary: string | undefined;
			for (let i = entries.length - 1; i >= 0; i--) {
--

			this.sessionManager.saveCompaction(compactionEntry);
			const newEntries = this.sessionManager.loadEntries();
			const loaded = loadSessionFromEntries(newEntries);
			this.agent.replaceMessages(loaded.messages);

			if (this._hookRunner) {
				await this._hookRunner.emit({
					type: "session",
					entries: newEntries,
					sessionFile: this.sessionFile,
					previousSessionFile: null,
					reason: "compact",
--
			}

			const entries = this.sessionManager.loadEntries();

			const preparation = prepareCompaction(entries, settings);
			if (!preparation) {
				this._emit({ type: "auto_compaction_end", result: null, aborted: false, willRetry: false });
				return;
			}

			// Find previous compaction summary if any
			let previousSummary: string | undefined;
			for (let i = entries.length - 1; i >= 0; i--) {
--

			this.sessionManager.saveCompaction(compactionEntry);
			const newEntries = this.sessionManager.loadEntries();
			const loaded = loadSessionFromEntries(newEntries);
			this.agent.replaceMessages(loaded.messages);

			if (this._hookRunner) {
				await this._hookRunner.emit({
					type: "session",
					entries: newEntries,
					sessionFile: this.sessionFile,
					previousSessionFile: null,
					reason: "compact",
--
	async switchSession(sessionPath: string): Promise<boolean> {
		const previousSessionFile = this.sessionFile;
		const oldEntries = this.sessionManager.loadEntries();

		// Emit before_switch event (can be cancelled)
		if (this._hookRunner?.hasHandlers("session")) {
			const result = (await this._hookRunner.emit({
				type: "session",
				entries: oldEntries,
				sessionFile: this.sessionFile,


Looking at the call sites, they mostly just read the entries and pass them around. None seem to mutate the array. Let me check more:

cd /Users/badlogic/workspaces/pi-mono && grep -B2 -A10 "\.loadEntries()" packages/coding-agent/src/modes/interactive/interactive-mode.ts | head -80


		// Load session entries if any
		const entries = this.session.sessionManager.loadEntries();

		// Set TUI-based UI context for custom tools
		const uiContext = this.createHookUIContext();
		this.setToolUIContext(uiContext, true);

		// Notify custom tools of session start
		await this.emitToolSessionEvent({
			entries,
			sessionFile: this.session.sessionFile,
			previousSessionFile: null,
--
		}

		const compactionEntry = getLatestCompactionEntry(this.sessionManager.loadEntries());

		for (const message of messages) {
			if (isBashExecutionMessage(message)) {
				this.addMessageToChat(message);
				continue;
			}

			if (message.role === "user") {
				const textContent = this.getUserMessageText(message);
				if (textContent) {
--

		// Show compaction info if session was compacted
		const entries = this.sessionManager.loadEntries();
		const compactionCount = entries.filter((e) => e.type === "compaction").length;
		if (compactionCount > 0) {
			const times = compactionCount === 1 ? "1 time" : `${compactionCount} times`;
			this.showStatus(`Session compacted ${times}`);
		}
	}

	async getUserInput(): Promise<string> {
		return new Promise((resolve) => {
			this.onInputCallback = (text: string) => {
--
		const hookRunner = this.session.hookRunner;
		if (hookRunner?.hasHandlers("session")) {
			const entries = this.sessionManager.loadEntries();
			await hookRunner.emit({
				type: "session",
				entries,
				sessionFile: this.session.sessionFile,
				previousSessionFile: null,
				reason: "shutdown",
			});
		}

		this.stop();
--

	private async handleCompactCommand(customInstructions?: string): Promise<void> {
		const entries = this.sessionManager.loadEntries();
		const messageCount = entries.filter((e) => e.type === "message").length;

		if (messageCount < 2) {
			this.showWarning("Nothing to compact (no messages yet)");
			return;
		}

		await this.executeCompaction(customInstructions, false);
	}


None of these mutate the entries array. They just read. A defensive copy isn't needed if we trust the callers not to mutate. We could return a readonly type instead.

Let me do the refactor:


		}
	}
	return null;
}

export function loadSessionFromEntries(entries: SessionEntry[]): LoadedSession {
	let thinkingLevel = "off";
	let model: { provider: string; modelId: string } | null = null;

	for (const entry of entries) {
		if (entry.type === "thinking_level_change") {
			thinkingLevel = entry.thinkingLevel;
		} else if (entry.type === "model_change") {
			model = { provider: entry.provider, modelId: entry.modelId };
		} else if (entry.type === "message" && entry.message.role === "assistant") {
			model = { provider: entry.message.provider, modelId: entry.message.model };
		}
	}

	let latestCompactionIndex = -1;
	for (let i = entries.length - 1; i >= 0; i--) {
		if (entries[i].type === "compaction") {
			latestCompactionIndex = i;
			break;
		}
	}

	if (latestCompactionIndex === -1) {
		const messages: AppMessage[] = [];
		for (const entry of entries) {
			if (entry.type === "message") {
				messages.push(entry.message);
			}
		}
		return { messages, thinkingLevel, model };
	}

	const compactionEvent = entries[latestCompactionIndex] as CompactionEntry;

	const keptMessages: AppMessage[] = [];
	for (let i = compactionEvent.firstKeptEntryIndex; i < entries.length; i++) {
		const entry = entries[i];
		if (entry.type === "message") {
			keptMessages.push(entry.message);
		}
	}

	const messages: AppMessage[] = [];
	messages.push(createSummaryMessage(compactionEvent.summary));
	messages.push(...keptMessages);

	return { messages, thinkingLevel, model };
}

function getSessionDirectory(cwd: string, agentDir: string): string {
	const safePath = `--${cwd.replace(/^[/\\]/, "").replace(/[/\\:]/g, "-")}--`;
	const sessionDir = join(agentDir, "sessions", safePath);
	if (!existsSync(sessionDir)) {
		mkdirSync(sessionDir, { recursive: true });
	}

[331 more lines in file. Use offset=170 to continue]


edit

export function loadSessionFromEntries(entries: SessionEntry[]): LoadedSession {
	let thinkingLevel = "off";
	let model: { provider: string; modelI

{"path": "/Users/badlogic/workspaces/pi-mono/packages/coding-agent/src/core/session-manager.ts", "oldText": "export function loadSessionFromEntries(entries: SessionEntry[]): LoadedSession {\n\tlet thinkingLevel = \"off\";\n\tlet model: { provider: string; modelI


no, we should do a defensive copy and document that it's a defensive copy


You're right. Let me do the refactor properly:

1. Rename `loadSessionFromEntries` to `buildSessionContext` with docs
2. Rename `loadEntries()` to `getEntries()` (no file loading, just returns defensive copy)
3. Add `buildSessionContext()` method to SessionManager
4. Document the defensive copy

export function loadSessionFromEntries(entries: SessionEntry[]): LoadedSession {
	let thinkingLevel = "off";
	let model: { provider: string; modelId: string } | null = null;

	for (const entry of entries) {
		if (entry.type === "thinking_level_change") {
			thinkingLevel = entry.thinkingLevel;
		} else if (entry.type === "model_change") {
			model = { provider: entry.provider, modelId: entry.modelId };
		} else if (entry.type === "message" && entry.message.role === "assistant") {
			model = { provider: entry.message.provider, modelId: entry.message.model };
		}
	}

	let latestCompactionIndex = -1;
	for (let i = entries.length - 1; i >= 0; i--) {
		if (entries[i].type === "compaction") {
			latestCompactionIndex = i;
			break;
		}
	}

	if (latestCompactionIndex === -1) {
		const messages: AppMessage[] = [];
		for (const entry of entries) {
			if (entry.type === "message") {
				messages.push(entry.message);
			}
		}
		return { messages, thinkingLevel, model };
	}

	const compactionEvent = entries[latestCompactionIndex] as CompactionEntry;

	const keptMessages: AppMessage[] = [];
	for (let i = compactionEvent.firstKeptEntryIndex; i < entries.length; i++) {
		const entry = entries[i];
		if (entry.type === "message") {
			keptMessages.push(entry.message);
		}
	}

	const messages: AppMessage[] = [];
	messages.push(createSummaryMessage(compactionEvent.summary));
	messages.push(...keptMessages);

	return { messages, thinkingLevel, model };
}

/**
 * Build the session context from entries. This is what gets sent to the LLM.
 *
 * If there's a compaction entry, returns the summary message plus messages
 * from `firstKeptEntryIndex` onwards. Otherwise returns all messages.
 *
 * Also extracts the current thinking level and model from the entries.
 */
export function buildSessionContext(entries: SessionEntry[]): LoadedSession {
	let thinkingLevel = "off";
	let model: { provider: string; modelId: string } | null = null;

	for (const entry of entries) {
		if (entry.type === "thinking_level_change") {
			thinkingLevel = entry.thinkingLevel;
		} else if (entry.type === "model_change") {
			model = { provider: entry.provider, modelId: entry.modelId };
		} else if (entry.type === "message" && entry.message.role === "assistant") {
			model = { provider: entry.message.provider, modelId: entry.message.model };
		}
	}

	let latestCompactionIndex = -1;
	for (let i = entries.length - 1; i >= 0; i--) {
		if (entries[i].type === "compaction") {
			latestCompactionIndex = i;
			break;
		}
	}

	if (latestCompactionIndex === -1) {
		const messages: AppMessage[] = [];
		for (const entry of entries) {
			if (entry.type === "message") {
				messages.push(entry.message);
			}
		}
		return { messages, thinkingLevel, model };
	}

	const compactionEvent = entries[latestCompactionIndex] as CompactionEntry;

	const keptMessages: AppMessage[] = [];
	for (let i = compactionEvent.firstKeptEntryIndex; i < entries.length; i++) {
		const entry = entries[i];
		if (entry.type === "message") {
			keptMessages.push(entry.message);
		}
	}

	const messages: AppMessage[] = [];
	messages.push(createSummaryMessage(compactionEvent.summary));
	messages.push(...keptMessages);

	return { messages, thinkingLevel, model };
}

/** @deprecated Use buildSessionContext instead */
export const loadSessionFromEntries = buildSessionContext;


Successfully replaced text in /Users/badlogic/workspaces/pi-mono/packages/coding-agent/src/core/session-manager.ts. Changed 1458 characters to 1877 characters.

     ...
 111 	}
 112 	return null;
 113 }
 114
-115 export function loadSessionFromEntries(entries: SessionEntry[]): LoadedSession {
+115 /**
+116  * Build the session context from entries. This is what gets sent to the LLM.
+117  *
+118  * If there's a compaction entry, returns the summary message plus messages
+119  * from `firstKeptEntryIndex` onwards. Otherwise returns all messages.
+120  *
+121  * Also extracts the current thinking level and model from the entries.
+122  */
+123 export function buildSessionContext(entries: SessionEntry[]): LoadedSession {
 116 	let thinkingLevel = "off";
 117 	let model: { provider: string; modelId: string } | null = null;
 118
 119 	for (const entry of entries) {
 120 		if (entry.type === "thinking_level_change") {
 121 			thinkingLevel = entry.thinkingLevel;
 122 		} else if (entry.type === "model_change") {
 123 			model = { provider: entry.provider, modelId: entry.modelId };
 124 		} else if (entry.type === "message" && entry.message.role === "assistant") {
 125 			model = { provider: entry.message.provider, modelId: entry.message.model };
 126 		}
 127 	}
 128
 129 	let latestCompactionIndex = -1;
 130 	for (let i = entries.length - 1; i >= 0; i--) {
 131 		if (entries[i].type === "compaction") {
 132 			latestCompactionIndex = i;
 133 			break;
 134 		}
 135 	}
 136
 137 	if (latestCompactionIndex === -1) {
 138 		const messages: AppMessage[] = [];
 139 		for (const entry of entries) {
 140 			if (entry.type === "message") {
 141 				messages.push(entry.message);
 142 			}
 143 		}
 144 		return { messages, thinkingLevel, model };
 145 	}
 146
 147 	const compactionEvent = entries[latestCompactionIndex] as CompactionEntry;
 148
 149 	const keptMessages: AppMessage[] = [];
 150 	for (let i = compactionEvent.firstKeptEntryIndex; i < entries.length; i++) {
 151 		const entry = entries[i];
 152 		if (entry.type === "message") {
 153 			keptMessages.push(entry.message);
 154 		}
 155 	}
 156
 157 	const messages: AppMessage[] = [];
 158 	messages.push(createSummaryMessage(compactionEvent.summary));
 159 	messages.push(...keptMessages);
 160
 161 	return { messages, thinkingLevel, model };
 162 }
 163
+172 /** @deprecated Use buildSessionContext instead */
+173 export const loadSessionFromEntries = buildSessionContext;
+174
 164 function getSessionDirectory(cwd: string, agentDir: string): string {
 165 	const safePath = `--${cwd.replace(/^[/\\]/, "").replace(/[/\\:]/g, "-")}--`;
 166 	const sessionDir = join(agentDir, "sessions", safePath);
 167 	if (!existsSync(sessionDir)) {
     ...


Now update the SessionManager methods:


		const entries = this.loadEntries();
		return loadSessionFromEntries(entries);
	}

	loadMessages(): AppMessage[] {
		return this.loadSession().messages;
	}

	loadThinkingLevel(): string {
		return this.loadSession().thinkingLevel;
	}

	loadModel(): { provider: string; modelId: string } | null {
		return this.loadSession().model;
	}

	loadEntries(): SessionEntry[] {
		if (this.inMemoryEntries.length > 0) {
			return [...this.inMemoryEntries];
		} else {
			return loadEntriesFromFile(this.sessionFile);
		}
	}

	createBranchedSessionFromEntries(entries: SessionEntry[], branchBeforeIndex: number): string | null {
		const newSessionId = uuidv4();
		const timestamp = new Date().toISOString().replace(/[:.]/g, "-");
		const newSessionFile = join(this.sessionDir, `${timestamp}_${newSessionId}.jsonl`);

		const newEntries: SessionEntry[] = [];
		for (let i = 0; i < branchBeforeIndex; i++) {
			const entry = entries[i];

			if (entry.type === "session") {
				newEntries.push({
					...entry,
					id: newSessionId,
					timestamp: new Date().toISOString(),
					branchedFrom: this.persist ? this.sessionFile : undefined,
				});

[122 more lines in file. Use offset=390 to continue]


	loadSession(): LoadedSession {
		const entries = this.loadEntries();
		return loadSessionFromEntries(entries);
	}

	loadMessages(): AppMessage[] {
		return this.loadSession().messages;
	}

	loadThinkingLevel(): string {
		return this.loadSession().thinkingLevel;
	}

	loadModel(): { provider: string; modelId: string } | null {
		return this.loadSession().model;
	}

	loadEntries(): SessionEntry[] {
		if (this.inMemoryEntries.length > 0) {
			return [...this.inMemoryEntries];
		} else {
			return loadEntriesFromFile(this.sessionFile);
		}
	}

	/**
	 * Build the session context (what gets sent to the LLM).
	 * If compacted, returns summary + kept messages. Otherwise all messages.
	 */
	buildSessionContext(): LoadedSession {
		return buildSessionContext(this.getEntries());
	}

	/** @deprecated Use buildSessionContext instead */
	loadSession(): LoadedSession {
		return this.buildSessionContext();
	}

	loadMessages(): AppMessage[] {
		return this.buildSessionContext().messages;
	}

	loadThinkingLevel(): string {
		return this.buildSessionContext().thinkingLevel;
	}

	loadModel(): { provider: string; modelId: string } | null {
		return this.buildSessionContext().model;
	}

	/**
	 * Get all session entries. Returns a defensive copy.
	 * Use buildSessionContext() if you need the messages for the LLM.
	 */
	getEntries(): SessionEntry[] {
		return [...this.inMemoryEntries];
	}

	/** @deprecated Use getEntries instead */
	loadEntries(): SessionEntry[] {
		return this.getEntries();
	}


Successfully replaced text in /Users/badlogic/workspaces/pi-mono/packages/coding-agent/src/core/session-manager.ts. Changed 545 characters to 949 characters.

     ...
 345 		this.inMemoryEntries.push(entry);
 346 		this._persist(entry);
 347 	}
 348
+349 	/**
+350 	 * Build the session context (what gets sent to the LLM).
+351 	 * If compacted, returns summary + kept messages. Otherwise all messages.
+352 	 */
+353 	buildSessionContext(): LoadedSession {
+354 		return buildSessionContext(this.getEntries());
+355 	}
+356
+357 	/** @deprecated Use buildSessionContext instead */
 349 	loadSession(): LoadedSession {
-350 		const entries = this.loadEntries();
-351 		return loadSessionFromEntries(entries);
+359 		return this.buildSessionContext();
 352 	}
 353
 354 	loadMessages(): AppMessage[] {
-355 		return this.loadSession().messages;
+363 		return this.buildSessionContext().messages;
 356 	}
 357
 358 	loadThinkingLevel(): string {
-359 		return this.loadSession().thinkingLevel;
+367 		return this.buildSessionContext().thinkingLevel;
 360 	}
 361
 362 	loadModel(): { provider: string; modelId: string } | null {
-363 		return this.loadSession().model;
+371 		return this.buildSessionContext().model;
 364 	}
 365
+374 	/**
+375 	 * Get all session entries. Returns a defensive copy.
+376 	 * Use buildSessionContext() if you need the messages for the LLM.
+377 	 */
+378 	getEntries(): SessionEntry[] {
+379 		return [...this.inMemoryEntries];
+380 	}
+381
+382 	/** @deprecated Use getEntries instead */
 366 	loadEntries(): SessionEntry[] {
-367 		if (this.inMemoryEntries.length > 0) {
-368 			return [...this.inMemoryEntries];
-369 		} else {
-370 			return loadEntriesFromFile(this.sessionFile);
-371 		}
+384 		return this.getEntries();
 372 	}
 373
 374 	createBranchedSessionFromEntries(entries: SessionEntry[], branchBeforeIndex: number): string | null {
 375 		const newSessionId = uuidv4();
     ...


Now update the exports in index.ts:

bash

cd /Users/badlogic/workspaces/pi-mono && grep -n "loadSessionFromEntries" packages/coding-agent/src/index.ts


126:	loadSessionFromEntries,


} from "./core/sdk.js";
export {
	type CompactionEntry,
	createSummaryMessage,
	getLatestCompactionEntry,
	type LoadedSession,
	loadSessionFromEntries,
	type ModelChangeEntry,
	parseSessionEntries,
	type SessionEntry,
	type SessionHeader,
	type SessionInfo,
	SessionManager,
	type SessionMessageEntry,
	SUMMARY_PREFIX,

[43 more lines in file. Use offset=135 to continue]


edit

export {
	type CompactionEntry,
	createSummaryMessage,
	getLatestCompactionEntry,
	type LoadedSession,
	loadSessionFromEntries,
	type ModelChangeEntry,
	parseSessionEntries,
	type SessionEntry,
	type SessionHeader,
	type SessionInfo,
	SessionManager,
	type SessionMessageEntry,
	SUMMARY_PREFIX,

export {
	buildSessionContext,
	type CompactionEntry,
	createSummaryMessage,
	getLatestCompactionEntry,
	type LoadedSession,
	loadSessionFromEntries,
	type ModelChangeEntry,
	parseSessionEntries,
	type SessionEntry,
	type SessionHeader,
	type SessionInfo,
	SessionManager,
	type SessionMessageEntry,
	SUMMARY_PREFIX,


Successfully replaced text in /Users/badlogic/workspaces/pi-mono/packages/coding-agent/src/index.ts. Changed 294 characters to 316 characters.

     ...
 118 	// Pre-built tools (use process.cwd())
 119 	readOnlyTools,
 120 } from "./core/sdk.js";
 121 export {
+122 	buildSessionContext,
 122 	type CompactionEntry,
 123 	createSummaryMessage,
 124 	getLatestCompactionEntry,
 125 	type LoadedSession,
     ...


Now update agent-session.ts to use the new names:

bash

cd /Users/badlogic/workspaces/pi-mono && sed -i '' 's/loadSessionFromEntries/buildSessionContext/g' packages/coding-agent/src/core/agent-session.ts


(no output)


> pi-monorepo@0.0.3 check
> biome check --write . && npm run check --workspaces --if-present && tsgo --noEmit

Checked 286 files in 161ms. Fixed 1 file.

> @mariozechner/pi-agent-core@0.27.5 check
> tsgo --noEmit

> @mariozechner/pi-ai@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 44 files in 41ms. No fixes applied.

> @mariozechner/pi-coding-agent@0.27.5 check
> tsgo --noEmit && tsgo -p tsconfig.examples.json

> @mariozechner/pi-mom@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 16 files in 18ms. No fixes applied.

> @mariozechner/pi@0.27.5 check
> biome check --write .

Checked 10 files in 17ms. No fixes applied.

> @mariozechner/pi-proxy@0.27.5 check
> biome check --write .

Checked 3 files in 3ms. No fixes applied.

> @mariozechner/pi-tui@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 27 files in 25ms. No fixes applied.

> @mariozechner/pi-web-ui@0.27.5 check
> tsgo --noEmit && cd example && tsgo --noEmit

> pi-web-ui-example@1.15.5 check
> tsgo --noEmit


Now update the changelog:


# Changelog

## [Unreleased]

### Added

- **Compaction hook improvements**: The `before_compact` session event now includes:
  - `previousSummary`: Summary from the last compaction (if any), so hooks can preserve accumulated context
  - `messagesToKeep`: Messages that will be kept after the summary (recent turns), in addition to `messagesToSummarize`
  - `resolveApiKey`: Function to resolve API keys for any model (checks settings, OAuth, env vars)
  - Removed `apiKey` string in favor of `resolveApiKey` for more flexibility

## [0.27.5] - 2025-12-24

### Added

- **HTML export syntax highlighting**: Code blocks in markdown and tool outputs (read, write) now have syntax highlighting using highlight.js with theme-aware colors matching the TUI.
- **HTML export improvements**: Render markdown server-side using marked (tables, headings, code blocks, etc.), honor user's chosen theme (light/dark), add image rendering for user messages, and style code blocks with TUI-like language markers. ([@scutifer](https://github.com/scutifer))

### Fixed

[833 more lines in file. Use offset=21 to continue]


edit

- **Compaction hook improvements**: The `before_compact` session event now includes:
  - `previousSummary`: Summary from the last compaction (if any), so hooks can preserve accumulated context
  - `messagesToKeep`: Messages that will be kept after the summary (recent turns), in addition to `messagesToSummarize`
  - `resolveApiKey`: Function to resolve API keys for any model (checks settings, OAuth, env vars)
  - Removed `apiKey` string in favor of `resolveApiKey` for more flexibility

- **SessionManager API cleanup**:
  - Added `buildSessionContext()` function and method (builds LLM context from entries, handling compaction)
  - Added `getEntries()` method (returns defensive copy of all session entries)
  - Deprecated `loadSessionFromEntries()` (use `buildSessionContext()`)
  - Deprecated `loadEntries()` (use `getEntries()`)


Successfully replaced text in /Users/badlogic/workspaces/pi-mono/packages/coding-agent/CHANGELOG.md. Changed 488 characters to 836 characters.

     ...
   9   - `messagesToKeep`: Messages that will be kept after the summary (recent turns), in addition to `messagesToSummarize`
  10   - `resolveApiKey`: Function to resolve API keys for any model (checks settings, OAuth, env vars)
  11   - Removed `apiKey` string in favor of `resolveApiKey` for more flexibility
  12
+ 13 - **SessionManager API cleanup**:
+ 14   - Added `buildSessionContext()` function and method (builds LLM context from entries, handling compaction)
+ 15   - Added `getEntries()` method (returns defensive copy of all session entries)
+ 16   - Deprecated `loadSessionFromEntries()` (use `buildSessionContext()`)
+ 17   - Deprecated `loadEntries()` (use `getEntries()`)
+ 18
  13 ## [0.27.5] - 2025-12-24
  14
  15 ### Added
  16
     ...


> pi-monorepo@0.0.3 check
> biome check --write . && npm run check --workspaces --if-present && tsgo --noEmit

Checked 286 files in 182ms. No fixes applied.

> @mariozechner/pi-agent-core@0.27.5 check
> tsgo --noEmit

> @mariozechner/pi-ai@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 44 files in 38ms. No fixes applied.

> @mariozechner/pi-coding-agent@0.27.5 check
> tsgo --noEmit && tsgo -p tsconfig.examples.json

> @mariozechner/pi-mom@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 16 files in 21ms. No fixes applied.

> @mariozechner/pi@0.27.5 check
> biome check --write .

Checked 10 files in 17ms. No fixes applied.

> @mariozechner/pi-proxy@0.27.5 check
> biome check --write .

Checked 3 files in 4ms. No fixes applied.

> @mariozechner/pi-tui@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 27 files in 30ms. No fixes applied.

> @mariozechner/pi-web-ui@0.27.5 check
> tsgo --noEmit && cd example && tsgo --noEmit

> pi-web-ui-example@1.15.5 check
> tsgo --noEmit


Done. The refactor:

1. `loadSessionFromEntries` → `buildSessionContext` (with deprecation alias)
2. `loadEntries()` → `getEntries()` (with deprecation alias)
3. Added `buildSessionContext()` method to SessionManager
4. `getEntries()` returns a defensive copy (documented)
5. Removed the file loading fallback from `getEntries()` since entries are always loaded on construction


no deprecation alias!


/** @deprecated Use buildSessionContext instead */
export const loadSessionFromEntries = buildSessionContext;


Successfully replaced text in /Users/badlogic/workspaces/pi-mono/packages/coding-agent/src/core/session-manager.ts. Changed 109 characters to 0 characters.

     ...
 168
 169 	return { messages, thinkingLevel, model };
 170 }
 171
-172 /** @deprecated Use buildSessionContext instead */
-173 export const loadSessionFromEntries = buildSessionContext;
 174
+173
 175 function getSessionDirectory(cwd: string, agentDir: string): string {
 176 	const safePath = `--${cwd.replace(/^[/\\]/, "").replace(/[/\\:]/g, "-")}--`;
 177 	const sessionDir = join(agentDir, "sessions", safePath);
 178 	if (!existsSync(sessionDir)) {
     ...


	/** @deprecated Use buildSessionContext instead */
	loadSession(): LoadedSession {
		return this.buildSessionContext();
	}


Successfully replaced text in /Users/badlogic/workspaces/pi-mono/packages/coding-agent/src/core/session-manager.ts. Changed 123 characters to 0 characters.

     ...
 352 	buildSessionContext(): LoadedSession {
 353 		return buildSessionContext(this.getEntries());
 354 	}
 355
-356 	/** @deprecated Use buildSessionContext instead */
-357 	loadSession(): LoadedSession {
-358 		return this.buildSessionContext();
-359 	}
 360
+357
 361 	loadMessages(): AppMessage[] {
 362 		return this.buildSessionContext().messages;
 363 	}
 364
     ...


	/** @deprecated Use getEntries instead */
	loadEntries(): SessionEntry[] {
		return this.getEntries();
	}


Successfully replaced text in /Users/badlogic/workspaces/pi-mono/packages/coding-agent/src/core/session-manager.ts. Changed 106 characters to 0 characters.

     ...
 374 	getEntries(): SessionEntry[] {
 375 		return [...this.inMemoryEntries];
 376 	}
 377
-378 	/** @deprecated Use getEntries instead */
-379 	loadEntries(): SessionEntry[] {
-380 		return this.getEntries();
-381 	}
 382
+379
 383 	createBranchedSessionFromEntries(entries: SessionEntry[], branchBeforeIndex: number): string | null {
 384 		const newSessionId = uuidv4();
 385 		const timestamp = new Date().toISOString().replace(/[:.]/g, "-");
 386 		const newSessionFile = join(this.sessionDir, `${timestamp}_${newSessionId}.jsonl`);
     ...


export {
	buildSessionContext,
	type CompactionEntry,
	createSummaryMessage,
	getLatestCompactionEntry,
	type LoadedSession,
	loadSessionFromEntries,
	type ModelChangeEntry,

export {
	buildSessionContext,
	type CompactionEntry,
	createSummaryMessage,
	getLatestCompactionEntry,
	type LoadedSession,
	type ModelChangeEntry,


Successfully replaced text in /Users/badlogic/workspaces/pi-mono/packages/coding-agent/src/index.ts. Changed 173 characters to 148 characters.

     ...
 123 	type CompactionEntry,
 124 	createSummaryMessage,
 125 	getLatestCompactionEntry,
 126 	type LoadedSession,
-127 	loadSessionFromEntries,
 128 	type ModelChangeEntry,
 129 	parseSessionEntries,
 130 	type SessionEntry,
 131 	type SessionHeader,
     ...


Now fix all usages of `loadEntries` and `loadSession`:

bash

cd /Users/badlogic/workspaces/pi-mono && grep -rn "\.loadEntries()\|\.loadSession()" packages/coding-agent/src/


packages/coding-agent/src/core/sdk.ts:499:	const existingSession = sessionManager.loadSession();
packages/coding-agent/src/core/agent-session.ts:513:		const entries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:751:			const entries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:814:			const newEntries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:912:			const entries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:976:			const newEntries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:1284:		const oldEntries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:1309:		const entries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:1360:		const entries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:1397:		const newEntries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:1427:		const entries = this.sessionManager.loadEntries();
packages/coding-agent/src/core/agent-session.ts:1573:			entries: this.sessionManager.loadEntries(),
packages/coding-agent/src/modes/print-mode.ts:31:	const entries = session.sessionManager.loadEntries();
packages/coding-agent/src/modes/interactive/interactive-mode.ts:354:		const entries = this.session.sessionManager.loadEntries();
packages/coding-agent/src/modes/interactive/interactive-mode.ts:1070:		const compactionEntry = getLatestCompactionEntry(this.sessionManager.loadEntries());
packages/coding-agent/src/modes/interactive/interactive-mode.ts:1140:		const entries = this.sessionManager.loadEntries();
packages/coding-agent/src/modes/interactive/interactive-mode.ts:1188:			const entries = this.sessionManager.loadEntries();
packages/coding-agent/src/modes/interactive/interactive-mode.ts:1927:		const entries = this.sessionManager.loadEntries();
packages/coding-agent/src/modes/rpc/rpc-mode.ts:124:	const entries = session.sessionManager.loadEntries();


cd /Users/badlogic/workspaces/pi-mono && sed -i '' 's/\.loadEntries()/.getEntries()/g' packages/coding-agent/src/core/agent-session.ts packages/coding-agent/src/modes/print-mode.ts packages/coding-agent/src/modes/interactive/interactive-mode.ts packages/coding-agent/src/modes/rpc/rpc-mode.ts


(no output)


cd /Users/badlogic/workspaces/pi-mono && sed -i '' 's/\.loadSession()/.buildSessionContext()/g' packages/coding-agent/src/core/sdk.ts


> pi-monorepo@0.0.3 check
> biome check --write . && npm run check --workspaces --if-present && tsgo --noEmit

Checked 286 files in 185ms. Fixed 1 file.

> @mariozechner/pi-agent-core@0.27.5 check
> tsgo --noEmit

../coding-agent/test/agent-session-compaction.test.ts(144,34): error TS2339: Property 'loadEntries' does not exist on type 'SessionManager'.
../coding-agent/test/agent-session-compaction.test.ts(147,45): error TS7006: Parameter 'e' implicitly has an 'any' type.
../coding-agent/test/agent-session-compaction.test.ts(203,37): error TS2339: Property 'loadEntries' does not exist on type 'SessionManager'.
../coding-agent/test/agent-session-compaction.test.ts(204,46): error TS7006: Parameter 'e' implicitly has an 'any' type.
../coding-agent/test/compaction.test.ts(19,2): error TS2305: Module '"../src/core/session-manager.js"' has no exported member 'loadSessionFromEntries'.
../mom/src/context.ts(17,2): error TS2305: Module '"@mariozechner/pi-coding-agent"' has no exported member 'loadSessionFromEntries'.
npm error Lifecycle script `check` failed with error:
npm error code 2
npm error path /Users/badlogic/workspaces/pi-mono/packages/agent
npm error workspace @mariozechner/pi-agent-core@0.27.5
npm error location /Users/badlogic/workspaces/pi-mono/packages/agent
npm error command failed
npm error command sh -c tsgo --noEmit

> @mariozechner/pi-ai@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 44 files in 40ms. No fixes applied.
../coding-agent/test/agent-session-compaction.test.ts(144,34): error TS2339: Property 'loadEntries' does not exist on type 'SessionManager'.
../coding-agent/test/agent-session-compaction.test.ts(147,45): error TS7006: Parameter 'e' implicitly has an 'any' type.
../coding-agent/test/agent-session-compaction.test.ts(203,37): error TS2339: Property 'loadEntries' does not exist on type 'SessionManager'.
../coding-agent/test/agent-session-compaction.test.ts(204,46): error TS7006: Parameter 'e' implicitly has an 'any' type.
../coding-agent/test/compaction.test.ts(19,2): error TS2305: Module '"../src/core/session-manager.js"' has no exported member 'loadSessionFromEntries'.
../mom/src/context.ts(17,2): error TS2305: Module '"@mariozechner/pi-coding-agent"' has no exported member 'loadSessionFromEntries'.
npm error Lifecycle script `check` failed with error:
npm error code 2
npm error path /Users/badlogic/workspaces/pi-mono/packages/ai
npm error workspace @mariozechner/pi-ai@0.27.5
npm error location /Users/badlogic/workspaces/pi-mono/packages/ai
npm error command failed
npm error command sh -c biome check --write . && tsgo --noEmit

> @mariozechner/pi-coding-agent@0.27.5 check
> tsgo --noEmit && tsgo -p tsconfig.examples.json

test/agent-session-compaction.test.ts(144,34): error TS2339: Property 'loadEntries' does not exist on type 'SessionManager'.
test/agent-session-compaction.test.ts(147,45): error TS7006: Parameter 'e' implicitly has an 'any' type.
test/agent-session-compaction.test.ts(203,37): error TS2339: Property 'loadEntries' does not exist on type 'SessionManager'.
test/agent-session-compaction.test.ts(204,46): error TS7006: Parameter 'e' implicitly has an 'any' type.
test/compaction.test.ts(19,2): error TS2305: Module '"../src/core/session-manager.js"' has no exported member 'loadSessionFromEntries'.
../mom/src/context.ts(17,2): error TS2305: Module '"@mariozechner/pi-coding-agent"' has no exported member 'loadSessionFromEntries'.
npm error Lifecycle script `check` failed with error:
npm error code 2
npm error path /Users/badlogic/workspaces/pi-mono/packages/coding-agent
npm error workspace @mariozechner/pi-coding-agent@0.27.5
npm error location /Users/badlogic/workspaces/pi-mono/packages/coding-agent
npm error command failed
npm error command sh -c tsgo --noEmit && tsgo -p tsconfig.examples.json

> @mariozechner/pi-mom@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 16 files in 21ms. No fixes applied.
../coding-agent/test/agent-session-compaction.test.ts(144,34): error TS2339: Property 'loadEntries' does not exist on type 'SessionManager'.
../coding-agent/test/agent-session-compaction.test.ts(147,45): error TS7006: Parameter 'e' implicitly has an 'any' type.
../coding-agent/test/agent-session-compaction.test.ts(203,37): error TS2339: Property 'loadEntries' does not exist on type 'SessionManager'.
../coding-agent/test/agent-session-compaction.test.ts(204,46): error TS7006: Parameter 'e' implicitly has an 'any' type.
../coding-agent/test/compaction.test.ts(19,2): error TS2305: Module '"../src/core/session-manager.js"' has no exported member 'loadSessionFromEntries'.
src/context.ts(17,2): error TS2305: Module '"@mariozechner/pi-coding-agent"' has no exported member 'loadSessionFromEntries'.
npm error Lifecycle script `check` failed with error:
npm error code 2
npm error path /Users/badlogic/workspaces/pi-mono/packages/mom
npm error workspace @mariozechner/pi-mom@0.27.5
npm error location /Users/badlogic/workspaces/pi-mono/packages/mom
npm error command failed
npm error command sh -c biome check --write . && tsgo --noEmit

> @mariozechner/pi@0.27.5 check
> biome check --write .

Checked 10 files in 17ms. No fixes applied.

> @mariozechner/pi-proxy@0.27.5 check
> biome check --write .

Checked 3 files in 3ms. No fixes applied.

> @mariozechner/pi-tui@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 27 files in 24ms. No fixes applied.
../coding-agent/test/agent-session-compaction.test.ts(144,34): error TS2339: Property 'loadEntries' does not exist on type 'SessionManager'.
../coding-agent/test/agent-session-compaction.test.ts(147,45): error TS7006: Parameter 'e' implicitly has an 'any' type.
../coding-agent/test/agent-session-compaction.test.ts(203,37): error TS2339: Property 'loadEntries' does not exist on type 'SessionManager'.
../coding-agent/test/agent-session-compaction.test.ts(204,46): error TS7006: Parameter 'e' implicitly has an 'any' type.
../coding-agent/test/compaction.test.ts(19,2): error TS2305: Module '"../src/core/session-manager.js"' has no exported member 'loadSessionFromEntries'.
../mom/src/context.ts(17,2): error TS2305: Module '"@mariozechner/pi-coding-agent"' has no exported member 'loadSessionFromEntries'.
npm error Lifecycle script `check` failed with error:
npm error code 2
npm error path /Users/badlogic/workspaces/pi-mono/packages/tui
npm error workspace @mariozechner/pi-tui@0.27.5
npm error location /Users/badlogic/workspaces/pi-mono/packages/tui
npm error command failed
npm error command sh -c biome check --write . && tsgo --noEmit

> @mariozechner/pi-web-ui@0.27.5 check
> tsgo --noEmit && cd example && tsgo --noEmit

> pi-web-ui-example@1.15.5 check
> tsgo --noEmit

Command exited with code 2


cd /Users/badlogic/workspaces/pi-mono && sed -i '' 's/\.loadEntries()/.getEntries()/g' packages/coding-agent/test/agent-session-compaction.test.ts


cd /Users/badlogic/workspaces/pi-mono && sed -i '' 's/loadSessionFromEntries/buildSessionContext/g' packages/coding-agent/test/compaction.test.ts packages/mom/src/context.ts


> pi-monorepo@0.0.3 check
> biome check --write . && npm run check --workspaces --if-present && tsgo --noEmit

Checked 286 files in 168ms. Fixed 2 files.

> @mariozechner/pi-agent-core@0.27.5 check
> tsgo --noEmit

> @mariozechner/pi-ai@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 44 files in 42ms. No fixes applied.

> @mariozechner/pi-coding-agent@0.27.5 check
> tsgo --noEmit && tsgo -p tsconfig.examples.json

> @mariozechner/pi-mom@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 16 files in 18ms. No fixes applied.

> @mariozechner/pi@0.27.5 check
> biome check --write .

Checked 10 files in 17ms. No fixes applied.

> @mariozechner/pi-proxy@0.27.5 check
> biome check --write .

Checked 3 files in 3ms. No fixes applied.

> @mariozechner/pi-tui@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 27 files in 26ms. No fixes applied.

> @mariozechner/pi-web-ui@0.27.5 check
> tsgo --noEmit && cd example && tsgo --noEmit

> pi-web-ui-example@1.15.5 check
> tsgo --noEmit


Now update the changelog to remove the deprecation mentions:

edit

- **SessionManager API cleanup**:
  - Added `buildSessionContext()` function and method (builds LLM context from entries, handling compaction)
  - Added `getEntries()` method (returns defensive copy of all session entries)
  - Deprecated `loadSessionFromEntries()` (use `buildSessionContext()`)
  - Deprecated `loadEntries()` (use `getEntries()`)

- **SessionManager API cleanup**:
  - Renamed `loadSessionFromEntries()` to `buildSessionContext()` (builds LLM context from entries, handling compaction)
  - Renamed `loadEntries()` to `getEntries()` (returns defensive copy of all session entries)
  - Added `buildSessionContext()` method to SessionManager


Successfully replaced text in /Users/badlogic/workspaces/pi-mono/packages/coding-agent/CHANGELOG.md. Changed 346 characters to 307 characters.

     ...
  10   - `resolveApiKey`: Function to resolve API keys for any model (checks settings, OAuth, env vars)
  11   - Removed `apiKey` string in favor of `resolveApiKey` for more flexibility
  12
  13 - **SessionManager API cleanup**:
- 14   - Added `buildSessionContext()` function and method (builds LLM context from entries, handling compaction)
- 15   - Added `getEntries()` method (returns defensive copy of all session entries)
- 16   - Deprecated `loadSessionFromEntries()` (use `buildSessionContext()`)
- 17   - Deprecated `loadEntries()` (use `getEntries()`)
+ 14   - Renamed `loadSessionFromEntries()` to `buildSessionContext()` (builds LLM context from entries, handling compaction)
+ 15   - Renamed `loadEntries()` to `getEntries()` (returns defensive copy of all session entries)
+ 16   - Added `buildSessionContext()` method to SessionManager
  18
  19 ## [0.27.5] - 2025-12-24
  20
  21 ### Added
     ...


Ready to commit when you want.


did some more shit, npm run check


> pi-monorepo@0.0.3 check
> biome check --write . && npm run check --workspaces --if-present && tsgo --noEmit

Checked 286 files in 157ms. Fixed 1 file.

> @mariozechner/pi-agent-core@0.27.5 check
> tsgo --noEmit

../coding-agent/src/core/agent-session.ts(1330,42): error TS2339: Property 'loadModel' does not exist on type 'SessionManager'.
../coding-agent/src/core/agent-session.ts(1340,45): error TS2339: Property 'loadThinkingLevel' does not exist on type 'SessionManager'.
npm error Lifecycle script `check` failed with error:
npm error code 2
npm error path /Users/badlogic/workspaces/pi-mono/packages/agent
npm error workspace @mariozechner/pi-agent-core@0.27.5
npm error location /Users/badlogic/workspaces/pi-mono/packages/agent
npm error command failed
npm error command sh -c tsgo --noEmit

> @mariozechner/pi-ai@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 44 files in 39ms. No fixes applied.
../coding-agent/src/core/agent-session.ts(1330,42): error TS2339: Property 'loadModel' does not exist on type 'SessionManager'.
../coding-agent/src/core/agent-session.ts(1340,45): error TS2339: Property 'loadThinkingLevel' does not exist on type 'SessionManager'.
npm error Lifecycle script `check` failed with error:
npm error code 2
npm error path /Users/badlogic/workspaces/pi-mono/packages/ai
npm error workspace @mariozechner/pi-ai@0.27.5
npm error location /Users/badlogic/workspaces/pi-mono/packages/ai
npm error command failed
npm error command sh -c biome check --write . && tsgo --noEmit

> @mariozechner/pi-coding-agent@0.27.5 check
> tsgo --noEmit && tsgo -p tsconfig.examples.json

src/core/agent-session.ts(1330,42): error TS2339: Property 'loadModel' does not exist on type 'SessionManager'.
src/core/agent-session.ts(1340,45): error TS2339: Property 'loadThinkingLevel' does not exist on type 'SessionManager'.
npm error Lifecycle script `check` failed with error:
npm error code 2
npm error path /Users/badlogic/workspaces/pi-mono/packages/coding-agent
npm error workspace @mariozechner/pi-coding-agent@0.27.5
npm error location /Users/badlogic/workspaces/pi-mono/packages/coding-agent
npm error command failed
npm error command sh -c tsgo --noEmit && tsgo -p tsconfig.examples.json

> @mariozechner/pi-mom@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 16 files in 17ms. No fixes applied.
../coding-agent/src/core/agent-session.ts(1330,42): error TS2339: Property 'loadModel' does not exist on type 'SessionManager'.
../coding-agent/src/core/agent-session.ts(1340,45): error TS2339: Property 'loadThinkingLevel' does not exist on type 'SessionManager'.
npm error Lifecycle script `check` failed with error:
npm error code 2
npm error path /Users/badlogic/workspaces/pi-mono/packages/mom
npm error workspace @mariozechner/pi-mom@0.27.5
npm error location /Users/badlogic/workspaces/pi-mono/packages/mom
npm error command failed
npm error command sh -c biome check --write . && tsgo --noEmit

> @mariozechner/pi@0.27.5 check
> biome check --write .

Checked 10 files in 17ms. No fixes applied.

> @mariozechner/pi-proxy@0.27.5 check
> biome check --write .

Checked 3 files in 3ms. No fixes applied.

> @mariozechner/pi-tui@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 27 files in 27ms. No fixes applied.
../coding-agent/src/core/agent-session.ts(1330,42): error TS2339: Property 'loadModel' does not exist on type 'SessionManager'.
../coding-agent/src/core/agent-session.ts(1340,45): error TS2339: Property 'loadThinkingLevel' does not exist on type 'SessionManager'.
npm error Lifecycle script `check` failed with error:
npm error code 2
npm error path /Users/badlogic/workspaces/pi-mono/packages/tui
npm error workspace @mariozechner/pi-tui@0.27.5
npm error location /Users/badlogic/workspaces/pi-mono/packages/tui
npm error command failed
npm error command sh -c biome check --write . && tsgo --noEmit

> @mariozechner/pi-web-ui@0.27.5 check
> tsgo --noEmit && cd example && tsgo --noEmit

> pi-web-ui-example@1.15.5 check
> tsgo --noEmit

Command exited with code 2


Looks like you removed `loadModel` and `loadThinkingLevel` from SessionManager. Let me check what's happening at those lines and fix the usages:


		await this._emitToolSessionEvent("switch", previousSessionFile);

		this.agent.replaceMessages(loaded.messages);

		// Restore model if saved
		const savedModel = this.sessionManager.loadModel();
		if (savedModel) {
			const availableModels = (await getAvailableModels()).models;
			const match = availableModels.find((m) => m.provider === savedModel.provider && m.id === savedModel.modelId);
			if (match) {
				this.agent.setModel(match);
			}
		}

		// Restore thinking level if saved (setThinkingLevel clamps to model capabilities)
		const savedThinking = this.sessionManager.loadThinkingLevel();
		if (savedThinking) {
			this.setThinkingLevel(savedThinking as ThinkingLevel);
		}

		this._reconnectToAgent();
		return true;
	}

	/**

[240 more lines in file. Use offset=1350 to continue]


Need to use `buildSessionContext()` instead:

		// Restore model if saved
		const savedModel = this.sessionManager.loadModel();
		if (savedModel) {
			const availableModels = (await getAvailableModels()).models;
			const match = availableModels.find((m) => m.provider === savedModel.provider && m.id === savedModel.modelId);
			if (match) {
				this.agent.setModel(match);
			}
		}

		// Restore thinking level if saved (setThinkingLevel clamps to model capabilities)
		const savedThinking = this.sessionManager.loadThinkingLevel();
		if (savedThinking) {
			this.setThinkingLevel(savedThinking as ThinkingLevel);
		}

		// Restore model if saved
		if (loaded.model) {
			const availableModels = (await getAvailableModels()).models;
			const match = availableModels.find((m) => m.provider === loaded.model!.provider && m.id === loaded.model!.modelId);
			if (match) {
				this.agent.setModel(match);
			}
		}

		// Restore thinking level if saved (setThinkingLevel clamps to model capabilities)
		if (loaded.thinkingLevel) {
			this.setThinkingLevel(loaded.thinkingLevel as ThinkingLevel);
		}


Successfully replaced text in /Users/badlogic/workspaces/pi-mono/packages/coding-agent/src/core/agent-session.ts. Changed 571 characters to 474 characters.

      ...
 1326
 1327 		this.agent.replaceMessages(loaded.messages);
 1328
 1329 		// Restore model if saved
-1330 		const savedModel = this.sessionManager.loadModel();
-1331 		if (savedModel) {
+1330 		if (loaded.model) {
 1332 			const availableModels = (await getAvailableModels()).models;
-1333 			const match = availableModels.find((m) => m.provider === savedModel.provider && m.id === savedModel.modelId);
+1332 			const match = availableModels.find((m) => m.provider === loaded.model!.provider && m.id === loaded.model!.modelId);
 1334 			if (match) {
 1335 				this.agent.setModel(match);
 1336 			}
 1337 		}
 1338
 1339 		// Restore thinking level if saved (setThinkingLevel clamps to model capabilities)
-1340 		const savedThinking = this.sessionManager.loadThinkingLevel();
-1341 		if (savedThinking) {
-1342 			this.setThinkingLevel(savedThinking as ThinkingLevel);
+1339 		if (loaded.thinkingLevel) {
+1340 			this.setThinkingLevel(loaded.thinkingLevel as ThinkingLevel);
 1343 		}
 1344
 1345 		this._reconnectToAgent();
 1346 		return true;
      ...


> pi-monorepo@0.0.3 check
> biome check --write . && npm run check --workspaces --if-present && tsgo --noEmit

Checked 286 files in 160ms. Fixed 1 file.

> @mariozechner/pi-agent-core@0.27.5 check
> tsgo --noEmit

> @mariozechner/pi-ai@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 44 files in 39ms. No fixes applied.

> @mariozechner/pi-coding-agent@0.27.5 check
> tsgo --noEmit && tsgo -p tsconfig.examples.json

> @mariozechner/pi-mom@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 16 files in 21ms. No fixes applied.

> @mariozechner/pi@0.27.5 check
> biome check --write .

Checked 10 files in 17ms. No fixes applied.

> @mariozechner/pi-proxy@0.27.5 check
> biome check --write .

Checked 3 files in 3ms. No fixes applied.

> @mariozechner/pi-tui@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 27 files in 25ms. No fixes applied.

> @mariozechner/pi-web-ui@0.27.5 check
> tsgo --noEmit && cd example && tsgo --noEmit

> pi-web-ui-example@1.15.5 check
> tsgo --noEmit


All checks pass.


do another check, fixed some more stuff


> pi-monorepo@0.0.3 check
> biome check --write . && npm run check --workspaces --if-present && tsgo --noEmit

Checked 286 files in 197ms. No fixes applied.

> @mariozechner/pi-agent-core@0.27.5 check
> tsgo --noEmit

> @mariozechner/pi-ai@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 44 files in 43ms. No fixes applied.

> @mariozechner/pi-coding-agent@0.27.5 check
> tsgo --noEmit && tsgo -p tsconfig.examples.json

> @mariozechner/pi-mom@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 16 files in 21ms. No fixes applied.

> @mariozechner/pi@0.27.5 check
> biome check --write .

Checked 10 files in 18ms. No fixes applied.

> @mariozechner/pi-proxy@0.27.5 check
> biome check --write .

Checked 3 files in 4ms. No fixes applied.

> @mariozechner/pi-tui@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 27 files in 27ms. No fixes applied.

> @mariozechner/pi-web-ui@0.27.5 check
> tsgo --noEmit && cd example && tsgo --noEmit

> pi-web-ui-example@1.15.5 check
> tsgo --noEmit


did more npm run check


> pi-monorepo@0.0.3 check
> biome check --write . && npm run check --workspaces --if-present && tsgo --noEmit

Checked 286 files in 157ms. No fixes applied.

> @mariozechner/pi-agent-core@0.27.5 check
> tsgo --noEmit

> @mariozechner/pi-ai@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 44 files in 43ms. No fixes applied.

> @mariozechner/pi-coding-agent@0.27.5 check
> tsgo --noEmit && tsgo -p tsconfig.examples.json

> @mariozechner/pi-mom@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 16 files in 17ms. No fixes applied.

> @mariozechner/pi@0.27.5 check
> biome check --write .

Checked 10 files in 17ms. No fixes applied.

> @mariozechner/pi-proxy@0.27.5 check
> biome check --write .

Checked 3 files in 4ms. No fixes applied.

> @mariozechner/pi-tui@0.27.5 check
> biome check --write . && tsgo --noEmit

Checked 27 files in 25ms. No fixes applied.

> @mariozechner/pi-web-ui@0.27.5 check
> tsgo --noEmit && cd example && tsgo --noEmit

> pi-web-ui-example@1.15.5 check
> tsgo --noEmit


All good.


ok, now going back to our docs, read hooks.md in full