fix: backport 9 upstream bug fixes (B1-B9) (#16)

* fix(vcs): fix inverted HEAD filter in watcher (backport B8 #17829)

The file watcher was ignoring HEAD changes instead of filtering
non-HEAD changes, so branch switches were never detected.

Upstream: anomalyco/opencode#17829 (e5cbecf)
Co-authored-by: Aiden Cline <63023139+rekram1-node@users.noreply.github.com>

* fix(core): detect context_length_exceeded in API call errors (backport B1 #17748)

Parse response body for error code so providers returning
context_length_exceeded are correctly classified as context overflow.

Upstream: anomalyco/opencode#17748 (e718db6)

* fix(util): log ZodError issues on schema validation failure (backport B5)

Print the specific validation issues alongside the stack trace to make
debugging schema mismatches easier.

* fix(tui): check for selected text in dialog escape handler (backport B7 #16779)

Check getSelectedText() instead of just getSelection() so escape
correctly closes dialogs when a selection object exists but has no text.

Upstream: anomalyco/opencode#16779 (a64f604)

* fix(ui): wrap question option descriptions instead of truncating (backport B6 #17782)

Replace overflow:hidden/text-overflow:ellipsis with overflow-wrap:anywhere
so long descriptions are visible. Remove the now-redundant data-custom override.

Upstream: anomalyco/opencode#17782 (51fcd04)

* fix(opencode): apply message transforms during compaction (backport B2 #17823)

Run Plugin.trigger("experimental.chat.messages.transform") on a
structuredClone of messages before passing them to the compaction model.

Upstream: anomalyco/opencode#17823 (4cb2996)

* fix(opencode): forward session permission ruleset to LLM stream (backport B3 #17064)

Add permission field to StreamInput and merge it with agent permissions
when computing disabled tools. Forward session.permission from prompt.ts.

Upstream: anomalyco/opencode#17064 (c2ca149)

* fix(opencode): add prompt schema validation debug logs (backport B4 #17812)

Log info and part schema validation failures before persisting to help
diagnose data corruption issues.

Upstream: anomalyco/opencode#17812 (fee3c19)

---------

Co-authored-by: Kit Langton <kit.langton@gmail.com>
Co-authored-by: Aiden Cline <63023139+rekram1-node@users.noreply.github.com>
Co-authored-by: Johannes Loher <johannes.loher@tngtech.com>
Co-authored-by: Adrian Mârza <adi11235 at gmail dot com>
Co-authored-by: Kyle Altendorf <sda@fstab.net>
Co-authored-by: Shoubhit Dash <shoubhit2005@gmail.com>
Co-authored-by: DS <78942835+Tarquinen@users.noreply.github.com>
Co-authored-by: Jason Quense <monastic.panic@gmail.com>

Author: 8 people

packages/opencode/src/cli/cmd/tui/ui/dialog.tsx

@@ -70,7 +70,7 @@ function init() {
   useKeyboard((evt) => {
     if (store.stack.length === 0) return
     if (evt.defaultPrevented) return
-    if ((evt.name === "escape" || (evt.ctrl && evt.name === "c")) && renderer.getSelection()) return
+    if ((evt.name === "escape" || (evt.ctrl && evt.name === "c")) && renderer.getSelection()?.getSelectedText()) return
     if (evt.name === "escape" || (evt.ctrl && evt.name === "c")) {
       const current = store.stack.at(-1)!
       current.onClose?.()

packages/opencode/src/project/vcs.ts

@@ -47,7 +47,7 @@ export namespace Vcs {
       log.info("initialized", { branch: current })
 
       const unsubscribe = Bus.subscribe(FileWatcher.Event.Updated, async (evt) => {
-        if (evt.properties.file.endsWith("HEAD")) return
+        if (!evt.properties.file.endsWith("HEAD")) return
         const next = await currentBranch()
         if (next !== current) {
           log.info("branch changed", { from: current, to: next })

packages/opencode/src/provider/error.ts

@@ -167,7 +167,8 @@ export namespace ProviderError {
 
   export function parseAPICallError(input: { providerID: ProviderID; error: APICallError }): ParsedAPICallError {
     const m = message(input.providerID, input.error)
-    if (isOverflow(m) || input.error.statusCode === 413) {
+    const body = json(input.error.responseBody)
+    if (isOverflow(m) || input.error.statusCode === 413 || body?.error?.code === "context_length_exceeded") {
       return {
         type: "context_overflow",
         message: m,

packages/opencode/src/session/compaction.ts

@@ -204,6 +204,8 @@ When constructing the summary, try to stick to this template:
 ---`
 
     const promptText = compacting.prompt ?? [defaultPrompt, ...compacting.context].join("\n\n")
+    const msgs = structuredClone(messages)
+    await Plugin.trigger("experimental.chat.messages.transform", {}, { messages: msgs })
     const result = await processor.process({
       user: userMessage,
       agent,
@@ -212,7 +214,7 @@ When constructing the summary, try to stick to this template:
       tools: {},
       system: [],
       messages: [
-        ...MessageV2.toModelMessages(messages, model, { stripMedia: true }),
+        ...MessageV2.toModelMessages(msgs, model, { stripMedia: true }),
         {
           role: "user",
           content: [

packages/opencode/src/session/llm.ts

@@ -37,6 +37,7 @@ export namespace LLM {
     messages: ModelMessage[]
     small?: boolean
     tools: Record<string, Tool>
+    permission?: PermissionNext.Ruleset
     retries?: number
     toolChoice?: "auto" | "required" | "none"
   }
@@ -255,8 +256,11 @@ export namespace LLM {
     })
   }
 
-  async function resolveTools(input: Pick<StreamInput, "tools" | "agent" | "user">) {
-    const disabled = PermissionNext.disabled(Object.keys(input.tools), input.agent.permission)
+  async function resolveTools(input: Pick<StreamInput, "tools" | "agent" | "user" | "permission">) {
+    const disabled = PermissionNext.disabled(
+      Object.keys(input.tools),
+      PermissionNext.merge(input.agent.permission, input.permission ?? []),
+    )
     for (const tool of Object.keys(input.tools)) {
       if (input.user.tools?.[tool] === false || disabled.has(tool)) {
         delete input.tools[tool]

packages/opencode/src/session/prompt.ts

@@ -709,6 +709,7 @@ export namespace SessionPrompt {
             : []),
         ],
         tools,
+        permission: session.permission,
         model,
         toolChoice: format.type === "json_schema" ? "required" : undefined,
       })
@@ -1351,6 +1352,26 @@ export namespace SessionPrompt {
       },
     )
 
+    const infoResult = MessageV2.Info.safeParse(info)
+    if (!infoResult.success) {
+      log.error("info schema validation failed before save", {
+        sessionID: input.sessionID,
+        messageID: info.id,
+        issues: infoResult.error.issues,
+      })
+    }
+    for (const [i, part] of parts.entries()) {
+      const partResult = MessageV2.Part.safeParse(part)
+      if (!partResult.success) {
+        log.error("part schema validation failed before save", {
+          sessionID: input.sessionID,
+          partID: part.id,
+          partType: part.type,
+          index: i,
+          issues: partResult.error.issues,
+        })
+      }
+    }
     await Session.updateMessage(info)
     for (const part of parts) {
       await Session.updatePart(part)

packages/opencode/src/util/fn.ts

@@ -7,6 +7,9 @@ export function fn<T extends z.ZodType, Result>(schema: T, cb: (input: z.infer<T
       parsed = schema.parse(input)
     } catch (e) {
       console.trace("schema validation failure stack trace:")
+      if (e instanceof z.ZodError) {
+        console.error("schema validation issues:", JSON.stringify(e.issues, null, 2))
+      }
       throw e
     }
 

packages/ui/src/components/message-part.css

@@ -1050,18 +1050,8 @@
     line-height: var(--line-height-large);
     color: var(--text-base);
     min-width: 0;
-    overflow: hidden;
-    text-overflow: ellipsis;
-    white-space: nowrap;
-  }
-
-  [data-slot="question-option"][data-custom="true"] {
-    [data-slot="option-description"] {
-      overflow: visible;
-      text-overflow: clip;
-      white-space: normal;
-      overflow-wrap: anywhere;
-    }
+    overflow-wrap: anywhere;
+    white-space: normal;
   }
 
   [data-slot="question-custom"] {