chore: drop unused root deps (pest/pest_derive/dirs), ignore tags+graph artifacts

improvise-v9w: the root `improvise` crate's [dependencies] listed pest,
pest_derive and dirs, none of which appear anywhere under src/. pest and
pest_derive remain genuine dependencies of improvise-formula and
improvise-io (persistence/improv.pest); examples/gen-grammar.rs reaches
pest_meta through [dev-dependencies], which examples do get, so the
examples still build. Verified with cargo build --workspace, cargo build
--examples, cargo test --workspace and the wasm check. Cargo.lock loses
only dirs and its transitive deps.

improvise-wg1: add the GNU Global tag files (GTAGS/GRTAGS/GPATH/GSYMS) and
the root graphviz artifacts (/graph.dot, /graph.html, /graph.svg) to
.gitignore. Named exactly rather than globbed so no checked-in asset is
swallowed; `git ls-files | git check-ignore --stdin` prints nothing.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EoW5BB87ZZdm96SvBTWawH

.gitignore

@@ -38,3 +38,14 @@ prolog-sessions/*
 *.gate.lock*
 .beads/embeddeddolt.incoming/
 .beads/embeddeddolt.previous/
+
+# GNU Global tag files (generated by the gtags devShell tooling)
+GTAGS
+GRTAGS
+GPATH
+GSYMS
+
+# graphviz/dependency-graph artifacts at the repo root
+/graph.dot
+/graph.html
+/graph.svg

Cargo.lock

@@ -477,27 +477,6 @@ dependencies = [
  "crypto-common",
 ]
 
-[[package]]
-name = "dirs"
-version = "6.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3e8aa94d75141228480295a7d0e7feb620b1a5ad9f12bc40be62411e38cce4e"
-dependencies = [
- "dirs-sys",
-]
-
-[[package]]
-name = "dirs-sys"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e01a3366d27ee9890022452ee61b2b63a67e6f13f58900b651ff5665f0bb1fab"
-dependencies = [
- "libc",
- "option-ext",
- "redox_users",
- "windows-sys",
-]
-
 [[package]]
 name = "document-features"
 version = "0.2.12"
@@ -652,17 +631,6 @@ dependencies = [
  "version_check",
 ]
 
-[[package]]
-name = "getrandom"
-version = "0.2.17"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ff2abc00be7fca6ebc474524697ae276ad847ad0a6b3faa4bcb027e9a4614ad0"
-dependencies = [
- "cfg-if",
- "libc",
- "wasi",
-]
-
 [[package]]
 name = "getrandom"
 version = "0.3.4"
@@ -767,7 +735,6 @@ dependencies = [
  "clap",
  "crossterm",
  "csv",
- "dirs",
  "enum_dispatch",
  "flate2",
  "gp-tree",
@@ -961,15 +928,6 @@ version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6d2cec3eae94f9f509c767b45932f1ada8350c4bdb85af2fcab4a3c14807981"
 
-[[package]]
-name = "libredox"
-version = "0.1.23"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8d8f1ea3f21fd3405dcaf6c9b5c1630af9afc422d9073ea39c5f6d6c772e08ed"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "line-clipping"
 version = "0.3.8"
@@ -1144,12 +1102,6 @@ version = "1.70.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "384b8ab6d37215f3c5301a95a4accb5d64aa607f1fcb26a11b5303878451b4fe"
 
-[[package]]
-name = "option-ext"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
-
 [[package]]
 name = "ordered-float"
 version = "4.6.0"
@@ -1554,17 +1506,6 @@ dependencies = [
  "bitflags 2.13.1",
 ]
 
-[[package]]
-name = "redox_users"
-version = "0.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4e608c6638b9c18977b00b475ac1f28d14e84b27d8d42f70e0bf1e3dec127ac"
-dependencies = [
- "getrandom 0.2.17",
- "libredox",
- "thiserror 2.0.20",
-]
-
 [[package]]
 name = "regex"
 version = "1.13.1"

Cargo.toml

@@ -33,12 +33,9 @@ indexmap = { version = "2", features = ["serde"] }
 chrono = { version = "0.4", features = ["serde"] }
 flate2 = "1"
 unicode-width = "^0.2"
-dirs = "6"
 csv = "1"
 clap = { version = "4.6.6", features = ["derive"] }
 enum_dispatch = "0.3.13"
-pest = "2.9.0"
-pest_derive = "2.9.0"
 
 [dev-dependencies]
 pest = "2.9.0"