phase29aq(p4): add trim stdlib coverage

apps/tests/phase29aq_string_trim_end_min.hako

@@ -0,0 +1,3 @@
+using "apps/lib/json_native/utils/string.hako" as StringUtils
+
+print(StringUtils.trim_end("  ab "))

apps/tests/phase29aq_string_trim_start_min.hako

@@ -0,0 +1,3 @@
+using "apps/lib/json_native/utils/string.hako" as StringUtils
+
+print(StringUtils.trim_start("  ab "))

docs/development/current/main/10-Now.md

@@ -3,7 +3,7 @@
 ## Current Focus
 
 - Phase: `docs/development/current/main/phases/phase-29aq/README.md`
-- Next: Phase 29aq P4 (stdlib split/scan derivatives)
+- Next: Phase 29aq P5 (stdlib split/scan derivatives)
 
 ## Gate (SSOT)
 

docs/development/current/main/30-Backlog.md

@@ -5,7 +5,7 @@ Scope: 「次にやる候補」を短く列挙するメモ。入口は `docs/dev
 
 ## Active
 
-- Phase 29aq: `docs/development/current/main/phases/phase-29aq/README.md` (Next: P4 split/scan derivatives)
+- Phase 29aq: `docs/development/current/main/phases/phase-29aq/README.md` (Next: P5 split/scan derivatives)
 - JoinIR regression gate SSOT: `docs/development/current/main/phases/phase-29ae/README.md`
 - CorePlan hardening (docs-first): `docs/development/current/main/phases/phase-29al/README.md`
 

docs/development/current/main/design/coreplan-migration-roadmap-ssot.md

@@ -34,7 +34,7 @@ Related:
 ## 1.1 Current (active)
 
 - Active phase: `docs/development/current/main/phases/phase-29aq/README.md`
-- Next step: Phase 29aq P4 (stdlib split/scan derivatives)
+- Next step: Phase 29aq P5 (stdlib split/scan derivatives)
 
 ## 2. すでに固めた SSOT（再発防止の土台）
 

docs/development/current/main/phases/phase-29ae/README.md

@@ -22,6 +22,8 @@ Goal: JoinIR の最小回帰セットを SSOT として固定する。
 - SplitScan (stdlib split, VM): `phase29aq_string_split_min_vm`
 - SplitScan (stdlib split char, VM): `phase29aq_string_split_char_min_vm`
 - SplitScan (stdlib split string, VM): `phase29aq_string_split_string_min_vm`
+- Pattern2 (stdlib trim_start, VM): `phase29aq_string_trim_start_min_vm`
+- Pattern2 (stdlib trim_end, VM): `phase29aq_string_trim_end_min_vm`
 - Pattern1 (stdlib to_upper, VM): `phase29aq_string_to_upper_min_vm`
 - Pattern5 (Break, VM): `phase286_pattern5_break_vm`
 - Pattern5 (strict shadow, VM): `phase29ao_pattern5_strict_shadow_vm`

docs/development/current/main/phases/phase-29aq/P4-TRIM-COVERAGE-SUBSET-INSTRUCTIONS.md

@@ -0,0 +1,38 @@
+---
+Status: Done
+Scope: stdlib trim coverage (trim_start, trim_end)
+Related:
+- docs/development/current/main/phases/phase-29aq/README.md
+- docs/development/current/main/phases/phase-29ae/README.md
+---
+
+# Phase 29aq P4: stdlib trim coverage (trim_start, trim_end)
+
+Goal: add fixtures/smokes for trim_start and trim_end, wired into the stdlib
+pack and the JoinIR regression gate. No behavior or logging changes.
+
+## Subsets (SSOT)
+
+- trim_start: leading whitespace trimmed, trailing preserved
+- trim_end: trailing whitespace trimmed, leading preserved
+
+Inputs exclude empty-only strings; no new Pattern2 logic is introduced.
+
+## Fixtures / smokes
+
+- `apps/tests/phase29aq_string_trim_start_min.hako`
+- `apps/tests/phase29aq_string_trim_end_min.hako`
+- `tools/smokes/v2/profiles/integration/joinir/phase29aq_string_trim_start_min_vm.sh`
+- `tools/smokes/v2/profiles/integration/joinir/phase29aq_string_trim_end_min_vm.sh`
+
+## Gate wiring
+
+- Add both smokes to `tools/smokes/v2/profiles/integration/joinir/phase29aq_stdlib_pack_vm.sh`.
+- Ensure `phase29ae_regression_pack_vm.sh` runs the stdlib pack.
+- Update `docs/development/current/main/phases/phase-29ae/README.md`.
+
+## Verification
+
+- `cargo build --release`
+- `./tools/smokes/v2/run.sh --profile quick`
+- `./tools/smokes/v2/profiles/integration/joinir/phase29ae_regression_pack_vm.sh`

docs/development/current/main/phases/phase-29aq/README.md

@@ -59,7 +59,8 @@ Plan/Composer subsets (or mark unsupported) before adding new subsets.
 - P1: Add stdlib subsets in priority order (index_of/last_index_of → parse_integer → split).
 - P2: Add stdlib subsets (index_of_string → to_upper).
 - P3: Expand split subsets (char/string delimiters; empty segments excluded by input).
+- P4: Expand stdlib trim coverage (trim_start/trim_end fixtures).
 
 ## Next (planned)
 
-- P4: Expand split/scan derivatives (candidate: starts_with/ends_with).
+- P5: Expand split/scan derivatives (candidate: starts_with/ends_with).

tools/smokes/v2/profiles/integration/joinir/phase29aq_stdlib_pack_vm.sh

@@ -24,6 +24,8 @@ run_filter "string_parse_integer_vm" "phase29aq_string_parse_integer_min_vm" ||
 run_filter "string_split_vm" "phase29aq_string_split_min_vm" || exit 1
 run_filter "string_split_char_vm" "phase29aq_string_split_char_min_vm" || exit 1
 run_filter "string_split_string_vm" "phase29aq_string_split_string_min_vm" || exit 1
+run_filter "string_trim_start_vm" "phase29aq_string_trim_start_min_vm" || exit 1
+run_filter "string_trim_end_vm" "phase29aq_string_trim_end_min_vm" || exit 1
 run_filter "string_to_upper_vm" "phase29aq_string_to_upper_min_vm" || exit 1
 
 log_success "phase29aq_stdlib_pack_vm: all stdlib subset filters passed"

tools/smokes/v2/profiles/integration/joinir/phase29aq_string_trim_end_min_vm.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+# phase29aq_string_trim_end_min_vm.sh - StringUtils.trim_end via plan/composer (VM)
+
+source "$(dirname "$0")/../../../lib/test_runner.sh"
+require_env || exit 2
+
+FIXTURE="$NYASH_ROOT/apps/tests/phase29aq_string_trim_end_min.hako"
+export NYASH_ALLOW_USING_FILE=1
+
+output=$(run_nyash_vm "$FIXTURE")
+
+expected=$(cat << 'TXT'
+  ab
+TXT
+)
+
+compare_outputs "$expected" "$output" "phase29aq_string_trim_end_min_vm" || exit 1

tools/smokes/v2/profiles/integration/joinir/phase29aq_string_trim_start_min_vm.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+# phase29aq_string_trim_start_min_vm.sh - StringUtils.trim_start via plan/composer (VM)
+
+source "$(dirname "$0")/../../../lib/test_runner.sh"
+require_env || exit 2
+
+FIXTURE="$NYASH_ROOT/apps/tests/phase29aq_string_trim_start_min.hako"
+export NYASH_ALLOW_USING_FILE=1
+
+output=$(run_nyash_vm "$FIXTURE")
+
+expected=$(cat << 'TXT'
+ab 
+TXT
+)
+
+compare_outputs "$expected" "$output" "phase29aq_string_trim_start_min_vm" || exit 1