fix: correct relative step paths to resolve from originating file

Step files are inside steps/ so inter-step references must be
./step-NN.md not ./steps/step-NN.md (which would double-nest).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/bmm/workflows/bmad-quick-flow/bmad-quick-spec/steps/step-01-understand.md

@@ -54,9 +54,9 @@ a) **Menu Handling:**
 
 - **[Y] Continue existing:**
   - Jump directly to the appropriate step based on `stepsCompleted`:
-    - `[1]` → Read fully and follow: `./steps/step-02-investigate.md` (Step 2)
-    - `[1, 2]` → Read fully and follow: `./steps/step-03-generate.md` (Step 3)
-    - `[1, 2, 3]` → Read fully and follow: `./steps/step-04-review.md` (Step 4)
+    - `[1]` → Read fully and follow: `./step-02-investigate.md` (Step 2)
+    - `[1, 2]` → Read fully and follow: `./step-03-generate.md` (Step 3)
+    - `[1, 2, 3]` → Read fully and follow: `./step-04-review.md` (Step 4)
 - **[N] Archive and start fresh:**
   - Rename `{wipFile}` to `{implementation_artifacts}/tech-spec-{slug}-archived-{date}.md`
 
@@ -167,7 +167,7 @@ b) **HALT and wait for user selection.**
 
 - IF A: Read fully and follow: `{advanced_elicitation}` with current tech-spec content, process enhanced insights, ask user "Accept improvements? (y/n)", if yes update WIP file then redisplay menu, if no keep original then redisplay menu
 - IF P: Read fully and follow: `{party_mode_exec}` with current tech-spec content, process collaborative insights, ask user "Accept changes? (y/n)", if yes update WIP file then redisplay menu, if no keep original then redisplay menu
-- IF C: Verify `{wipFile}` has `stepsCompleted: [1]`, then read fully and follow: `./steps/step-02-investigate.md`
+- IF C: Verify `{wipFile}` has `stepsCompleted: [1]`, then read fully and follow: `./step-02-investigate.md`
 - IF Any other comments or queries: respond helpfully then redisplay menu
 
 #### EXECUTION RULES:

src/bmm/workflows/bmad-quick-flow/bmad-quick-spec/steps/step-02-investigate.md

@@ -121,7 +121,7 @@ Display: "**Select:** [A] Advanced Elicitation [P] Party Mode [C] Continue to Ge
 
 - IF A: Read fully and follow: `{advanced_elicitation}` with current tech-spec content, process enhanced insights, ask user "Accept improvements? (y/n)", if yes update WIP file then redisplay menu, if no keep original then redisplay menu
 - IF P: Read fully and follow: `{party_mode_exec}` with current tech-spec content, process collaborative insights, ask user "Accept changes? (y/n)", if yes update WIP file then redisplay menu, if no keep original then redisplay menu
-- IF C: Verify frontmatter updated with `stepsCompleted: [1, 2]`, then read fully and follow: `./steps/step-03-generate.md`
+- IF C: Verify frontmatter updated with `stepsCompleted: [1, 2]`, then read fully and follow: `./step-03-generate.md`
 - IF Any other comments or queries: respond helpfully then redisplay menu
 
 #### EXECUTION RULES:

src/bmm/workflows/bmad-quick-flow/bmad-quick-spec/steps/step-03-generate.md

@@ -112,7 +112,7 @@ stepsCompleted: [1, 2, 3]
 ---
 ```
 
-c) **Read fully and follow: `./steps/step-04-review.md` (Step 4)**
+c) **Read fully and follow: `./step-04-review.md` (Step 4)**
 
 ## REQUIRED OUTPUTS: