🚧 Add export feature and refined exclusion info

README.md

@@ -14,7 +14,7 @@ See `functional specification.md` for the full specification.
 
 - Run-once execution, designed for Windows Task Scheduler / cron / systemd timers
 - Change detection via `git status --porcelain -z` (NUL-safe, UTF-8)
-- Configurable include/exclude file filters (globs)
+- Configurable include/exclude file filters (globs), with every excluded file and its matching rule logged at DEBUG level
 - Security validation with forbidden patterns (abort by default)
 - Pluggable author resolvers with priority chain and confidence levels
 - Per-file attribution recorded in the commit message
@@ -24,6 +24,7 @@ See `functional specification.md` for the full specification.
 - Repository-level lock with stale-lock detection (stored outside the repo)
 - Rotating file logs plus console logging
 - Dry-run mode, exit codes suitable for external monitoring
+- `export` command: the collected history as analysis-ready CSV/JSONL (one row per file change, with author, timestamps and Tracker-Run identifiers)
 - Cross-platform: Windows / Linux / macOS
 
 ## Installation
@@ -42,6 +43,7 @@ git-auto-tracker run [--dry-run]   # collect changes and commit
 git-auto-tracker status            # show detected changes without committing
 git-auto-tracker validate          # validate configuration / repository / resolvers
 git-auto-tracker config            # print effective configuration
+git-auto-tracker export -o out.csv # export the commit history for analysis
 ```
 
 Global options:
@@ -52,6 +54,25 @@ Global options:
 --version          Print version and exit
 ```
 
+### Analyzing the audit trail
+
+`export` turns the tracker commits of the configured repository into a
+flat table — one row per file change, with the collection time, run
+identifier, host, change letter, path, author and last-modified time:
+
+```bash
+git-auto-tracker export -o history.csv            # CSV (default format)
+git-auto-tracker export -o history.jsonl           # JSON Lines
+git-auto-tracker export -o history.csv --since 2026-09-01
+```
+
+The rows load directly into pandas/Excel for analysis (who changes most,
+which subtrees churn, change volume per day, everything ever deleted).
+Commits written with a different `commit.file_separator` than the current
+configuration are skipped with a warning, since their fields cannot be
+split reliably. Non-tracker commits (e.g. the repository's initial
+import) are ignored automatically.
+
 ## Configuration
 
 See [`config/example.yaml`](config/example.yaml). Configuration is YAML;