fix(explore): make the capture request the write confirmation

.changeset/explore-capture-request-is-confirmation.md

@@ -0,0 +1,5 @@
+---
+'@fission-ai/openspec': patch
+---
+
+Resolve the contradiction that left explore mode's capture branch without a governing rule. Explore states twice that the agent must ask a direct yes/no question and wait for confirmation in a separate user message before its first write-capable action, naming `openspec new change` as an example, while the capture branch tells the agent to transition "seamlessly" into running `openspec new change` and creating artifacts with no confirmation step. Both readings were defensible from the text, so the same "capture this as a change" request either wrote `.openspec.yaml` plus several artifacts immediately or stopped and asked, depending on which passage the agent weighed, which made the #1715 guarantee unenforceable in the one explore path that writes files. An explicit capture request is now stated to be that confirmation, covering the change and the artifacts the request names and nothing else. The guardrail keeps its teeth for the case #1715 actually reported: when the agent is the one proposing the capture, or when the work would go beyond the requested scope, it still asks first, and answers to design or clarifying questions are still never consent to write. Both explore delivery surfaces and the committed skill carry the same wording. Fixes #1828.

skills/openspec-explore/SKILL.md

@@ -11,7 +11,7 @@ metadata:
 
 Enter explore mode. Think deeply. Visualize freely. Follow the conversation wherever it goes.
 
-**IMPORTANT: Explore mode is for thinking, not implementing.** You may read files, search code, investigate the codebase, and run read-only commands or tools without confirmation, but you must NEVER write code or implement features. If the user asks you to implement something, remind them to exit explore mode first and create a change proposal. You MAY create or update OpenSpec change artifacts (proposals, designs, specs) within a confirmed scope—that's capturing thinking, not implementing. Answering design or clarifying questions is never consent to write. Before the first write-capable action, name the artifacts or files you would change and what you would do, ask a direct yes/no question, and wait for the user's confirmation in a separate message. Confirmation covers only the scope you described; ask again before expanding it. For a new change, scaffold it first as described below.
+**IMPORTANT: Explore mode is for thinking, not implementing.** You may read files, search code, investigate the codebase, and run read-only commands or tools without confirmation, but you must NEVER write code or implement features. If the user asks you to implement something, remind them to exit explore mode first and create a change proposal. You MAY create or update OpenSpec change artifacts (proposals, designs, specs) within a confirmed scope—that's capturing thinking, not implementing. Answering design or clarifying questions is never consent to write. Before the first write-capable action, name the artifacts or files you would change and what you would do, ask a direct yes/no question, and wait for the user's confirmation in a separate message. Confirmation covers only the scope you described; ask again before expanding it. An explicit request from the user to capture the exploration as a new change is itself that confirmation, covering the change and the change artifacts the request names; scaffold it first as described below.
 
 **This is a stance, not a workflow.** There are no fixed steps, no required sequence, no mandatory outputs. You're a thinking partner helping the user explore.
 
@@ -141,7 +141,7 @@ Think freely. When insights crystallize, you might offer:
 - "This feels solid enough to start a change. Want me to create a proposal?"
 - Or keep exploring - no pressure to formalize
 
-If the user asks you to capture the exploration as a new change, transition seamlessly into the requested capture:
+If the user asks you to capture the exploration as a new change, that request is the confirmation required above. It covers scaffolding that change and creating the change artifacts the request names, and nothing else. This holds only when the request is theirs: a yes to an offer you made confirms only the scope your offer itself named, so name the change and the artifacts in the offer. Don't re-ask for what they already asked for; do ask before anything beyond it. Transition seamlessly into the requested capture:
 
 1. Run `openspec new change "<name>"` (with `--store <id>` when applicable) before creating any artifacts. Never create a new change directory under `openspec/changes/` by hand; the CLI scaffold creates required metadata such as `.openspec.yaml`. Keep the selected `--store <id>` on every applicable follow-up `status` and `instructions` command.
 2. Run `openspec status --change "<name>" --json` (append the confirmed `--store "<id>"` only for a registered standalone store), then process the requested artifacts in dependency order. For each requested artifact that is `ready`, run `openspec instructions "<artifact-id>" --change "<name>" --json` (append the confirmed `--store "<id>"` only for a registered standalone store). Before creating a requested artifact, evaluate any condition in its own `instruction` against the explored change; record a deliberate skip instead when the condition does not apply. If a requested artifact is blocked by a direct prerequisite the user did not request, run `openspec instructions "<prerequisite-id>" --change "<name>" --json` (append the confirmed `--store "<id>"` only for a registered standalone store) for that prerequisite whether it is `ready` or `blocked`. If its own `instruction` states a condition, evaluate that condition against the explored change and record a deliberate skip only when the condition does not apply. If the condition applies, or the prerequisite is not conditional, treat it as a normal prerequisite and ask before expanding the capture. Do not create an unrequested prerequisite unless the user approves.
@@ -335,7 +335,7 @@ But this summary is optional. Sometimes the thinking IS the value.
 - **Don't fake understanding** - If something is unclear, dig deeper
 - **Don't rush** - Discovery is thinking time, not task time
 - **Don't force structure** - Let patterns emerge naturally
-- **Don't auto-capture** - Offer to save insights, don't just do it. Read-only commands and tools need no confirmation. Before the first write-capable action—including `openspec new change` or another command that writes files—name the artifacts or files and proposed changes, ask a direct yes/no question, and wait for explicit confirmation in a separate user message. That confirmation covers only the described scope; ask again before expanding it. Answers to design or clarifying questions are never consent to write.
+- **Don't auto-capture** - Offer to save insights, don't just do it. Read-only commands and tools need no confirmation. Before the first write-capable action—including `openspec new change` or another command that writes files—name the artifacts or files and proposed changes, ask a direct yes/no question, and wait for explicit confirmation in a separate user message. That confirmation covers only the described scope; ask again before expanding it. Answers to design or clarifying questions are never consent to write. That rule governs `openspec new change` whenever you are the one proposing the capture; the user's own capture request is the exception, handled in the capture transition above.
 - **Don't manually scaffold changes** - Never create a new change directory under `openspec/changes/` by hand. Always use `openspec new change "<name>"` (with `--store <id>` when applicable) so required metadata such as `.openspec.yaml` is created before writing artifacts.
 - **Do visualize** - A good diagram is worth many paragraphs
 - **Do explore the codebase** - Ground discussions in reality