fix(extensions): tell agent to run mandatory hooks, not just emit the directive (#2901)

In agent-direct invocations nothing watches agent output for the
EXECUTE_COMMAND: directive, so a mandatory hook that is only emitted
never runs and the failure is silent (#2730). Add one line after each
mandatory-hook block instructing the agent to actually invoke the hook
and wait for it before continuing.

The instruction tells the agent to run the hook the way it would run
the command itself in the current agent/session, and notes the
invocation may differ from the literal {command} id shown in the block
(e.g. skills-mode agents run it as /skill:speckit-... or $speckit-...),
so it stays correct outside the default slash-command form.

Fixes #2730

templates/commands/analyze.md

@@ -45,6 +45,7 @@ You **MUST** consider the user input before proceeding (if not empty).
 
     Wait for the result of the hook command before proceeding to the Goal.
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
 - If no hooks are registered or `.specify/extensions.yml` does not exist, skip silently
 
 ## Goal
@@ -228,6 +229,7 @@ After reporting, check if `.specify/extensions.yml` exists in the project root.
     Executing: `/{command}`
     EXECUTE_COMMAND: {command}
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
 - If no hooks are registered or `.specify/extensions.yml` does not exist, skip silently
 
 ## Operating Principles

templates/commands/checklist.md

@@ -66,6 +66,7 @@ You **MUST** consider the user input before proceeding (if not empty).
 
     Wait for the result of the hook command before proceeding to the Execution Steps.
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
 - If no hooks are registered or `.specify/extensions.yml` does not exist, skip silently
 
 ## Execution Steps
@@ -363,4 +364,5 @@ Check if `.specify/extensions.yml` exists in the project root.
     Executing: `/{command}`
     EXECUTE_COMMAND: {command}
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
 - If no hooks are registered or `.specify/extensions.yml` does not exist, skip silently

templates/commands/clarify.md

@@ -49,6 +49,7 @@ You **MUST** consider the user input before proceeding (if not empty).
 
     Wait for the result of the hook command before proceeding to the Outline.
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
 - If no hooks are registered or `.specify/extensions.yml` does not exist, skip silently
 
 ## Outline
@@ -251,6 +252,7 @@ Check if `.specify/extensions.yml` exists in the project root.
     Executing: `/{command}`
     EXECUTE_COMMAND: {command}
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
   - **Optional hook** (`optional: true`):
     ```
     ## Extension Hooks

templates/commands/constitution.md

@@ -46,6 +46,7 @@ You **MUST** consider the user input before proceeding (if not empty).
 
     Wait for the result of the hook command before proceeding to the Outline.
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
 - If no hooks are registered or `.specify/extensions.yml` does not exist, skip silently
 
 ## Outline
@@ -147,4 +148,5 @@ Check if `.specify/extensions.yml` exists in the project root.
     Executing: `/{command}`
     EXECUTE_COMMAND: {command}
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
 - If no hooks are registered or `.specify/extensions.yml` does not exist, skip silently

templates/commands/converge.md

@@ -49,6 +49,7 @@ You **MUST** consider the user input before proceeding (if not empty).
 
     Wait for the result of the hook command before proceeding to the Goal.
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
 
 - If no hooks are registered or `.specify/extensions.yml` does not exist, skip silently
 
@@ -266,5 +267,6 @@ After producing the result, check if `.specify/extensions.yml` exists in the pro
     Executing: `/{command}`
     EXECUTE_COMMAND: {command}
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
 
 - If no hooks are registered or `.specify/extensions.yml` does not exist, skip silently

templates/commands/implement.md

@@ -45,6 +45,7 @@ You **MUST** consider the user input before proceeding (if not empty).
     
     Wait for the result of the hook command before proceeding to the Outline.
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
 - If no hooks are registered or `.specify/extensions.yml` does not exist, skip silently
 
 ## Outline
@@ -192,6 +193,7 @@ Check if `.specify/extensions.yml` exists in the project root.
     Executing: `/{command}`
     EXECUTE_COMMAND: {command}
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
   - **Optional hook** (`optional: true`):
     ```
     ## Extension Hooks

templates/commands/plan.md

@@ -53,6 +53,7 @@ You **MUST** consider the user input before proceeding (if not empty).
 
     Wait for the result of the hook command before proceeding to the Outline.
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
 - If no hooks are registered or `.specify/extensions.yml` does not exist, skip silently
 
 ## Outline
@@ -91,6 +92,7 @@ Check if `.specify/extensions.yml` exists in the project root.
     Executing: `/{command}`
     EXECUTE_COMMAND: {command}
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
   - **Optional hook** (`optional: true`):
     ```
     ## Extension Hooks

templates/commands/specify.md

@@ -50,6 +50,7 @@ You **MUST** consider the user input before proceeding (if not empty).
 
     Wait for the result of the hook command before proceeding to the Outline.
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
 - If no hooks are registered or `.specify/extensions.yml` does not exist, skip silently
 
 ## Outline
@@ -253,6 +254,7 @@ Check if `.specify/extensions.yml` exists in the project root.
     Executing: `/{command}`
     EXECUTE_COMMAND: {command}
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
   - **Optional hook** (`optional: true`):
     ```
     ## Extension Hooks

templates/commands/tasks.md

@@ -54,6 +54,7 @@ You **MUST** consider the user input before proceeding (if not empty).
     
     Wait for the result of the hook command before proceeding to the Outline.
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
 - If no hooks are registered or `.specify/extensions.yml` does not exist, skip silently
 
 ## Outline
@@ -111,6 +112,7 @@ Check if `.specify/extensions.yml` exists in the project root.
     Executing: `/{command}`
     EXECUTE_COMMAND: {command}
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
   - **Optional hook** (`optional: true`):
     ```
     ## Extension Hooks

templates/commands/taskstoissues.md

@@ -46,6 +46,7 @@ You **MUST** consider the user input before proceeding (if not empty).
 
     Wait for the result of the hook command before proceeding to the Outline.
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
 - If no hooks are registered or `.specify/extensions.yml` does not exist, skip silently
 
 ## Outline
@@ -100,4 +101,5 @@ Check if `.specify/extensions.yml` exists in the project root.
     Executing: `/{command}`
     EXECUTE_COMMAND: {command}
     ```
+    After emitting the block above you MUST actually invoke the hook and wait for it to finish before continuing. Run it the same way you would run the command yourself in this agent/session (the invocation may differ from the literal `{command}` id shown above, e.g. a skills-mode agent runs it as `/skill:speckit-...` or `$speckit-...`). Emitting the block alone does not run the hook.
 - If no hooks are registered or `.specify/extensions.yml` does not exist, skip silently